O.L. Sealing Systems

Transcription

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2 Contents Introduction to Page 3 Piston Seals SlipRing Page 4, 5 SharpSeal Page 6, 7 O-Cap Page 8 Scrapers WypeRing Page 9 Rod Seals SlipRing Page 10, 11 SharpSeal Page 12, 13 O-Cap Page 14 Back-upRings BakRing Page 15 Rotating Seals TurnRing External Page 16 TurnRing Internal Page 17 Wear Rings GuideStrip Page 18, 19, 20 Materials Page 21 Installation Instructions Page 22 O-Ring dimensional list Page 22 Other O.L. Products Page 23 2

3 Introduction O. L. Sealing Systems consists of a range of static and dynamic SlipRing seals and a range of GuideStrip bearings for the guiding of pistons and piston rods. The great variety of designs and materials makes it possible to solve most sealing problems. SlipRing seals SlipRing seals consist of an elastic base the energizer covered by a SlipRing of a harder and more wear resistant material. The idea behind SlipRing seals is to combine the properties of an elastomer with the excellent frictional and wear resistent properties of the SlipRing material. As the SlipRing is the»dynamic«part of the seal which slides against the sealing surface, it is obvious that the high quality of the SlipRing material is of major importance for reliable functioning of the seal. The Kefloy materials are a series of high quality composite materials especially developed by O.L. Seals for use for SlipRings. Function of SlipRing seals SlipRing seals are so-called automatic seals. This means that the seal is actuated by the pressure; the higher the pressure, the higher the force between the SlipRing and the sealing surface. 1 O-Ring energizer 2 SlipRing Pressure 2 1 Advantages of SlipRing seals Compared to conventional elastomeric seals, SlipRing seals have several advantages. Service life The excellent wear properties of Kefloy materials assure the SlipRing seals a long service life even under harsh working conditions. Extrusion resistance The hardness of Kefloy makes SlipRing seals resistant to extrusion. Low Friction The Kefloy materials have a low coefficient of friction. SlipRings used as dynamic seals absorb less energy and generate less heat than conventional seals. No Stick-slip The static and the dynamic coefficient of friction of Kefloy is almost identical. This ensures stick-slip free start and stop and a smooth and chatter free travel plus the possibility of accurate positioning. No vulcanizing Unlike many other materials Kefloy will never vulcanize to the sealing surface. Even after many years of standstill, SlipRings will function smooth and troublefree. Wide temperature range SlipRings of Kefloy will maintain their good properties from low to high temperatures. By selecting the right O-Ring energizer material, SlipRing seals will function troublefree over a wide range of temperatures. Friction Hydraulic pressure Typical values for 50 mm piston seals 1 Elastomer seal 2 SlipRing seal Stick-slip MPa Wide fluid range Kefloy materials are resistant to almost all types of fluids. Combined with the right O-Ring energizer material SlipRings can be used with nearly all fluids. High speeds SlipRings of Kefloy can be used for reciprocating applications with speeds up to 15 m/sec. Friction Velocity 1 Elastomer seal 2 SlipRing seal 3

4 Piston Seals SlipRing SlipRing type is a double acting piston seal consisting of an outer sliding part of Kefloy energized by a rubber O-ring. SlipRing is pressure responsive. SlipRing can be used with a great variety of fluids. Kefloy is compatible with virtually all fluids. To avoid extrusion SlipRing is chamfered. SlipRing type is a heavy duty piston seal recommended for pressures up to 40 MPa. Where an extremely low friction is required a light series of SlipRing is available. See installation chart. SlipRing type is a double acting piston seal consisting of an outer sliding part of Kefloy energized by a rubber O-ring. SlipRing is pressure responsive. SlipRing can be used with a great vairety of fluids. SlipRing type is not chamfered and should not be used where pressure exceeds 20 MPa. Where an extremely low friction is required a light series of is available. See installation chart. Ordering Example Standard duty SlipRing Type Bore diameter: 63,0 mm Medium: Sealing surface: G Part no Seal Type Bore dia. x 10 Material compound no O-Ring size 50,39 x 3,53 O-Ring to be ordered separately Ra 0,2 µm Ra 1,6 µm Standard D Bore diam. d diam. S depth L Width R Radius G Radial Gap System pressure C Chamfer O-Ring Cross sec. Light Type no H 9 h 9 + 0,2-0 max. 10 MP 20 MPa 40 MPa Min. Type no ,9 D- 4,9 2,45 2,2 0,4 0,30 0,20 0,15 0,7 1, ,9 D- 7,5 3,75 3,2 0,6 0,40 0,25 0,15 1,0 2, ,9 D- 11,0 5,50 4,2 1,0 0,40 0,25 0,20 1,3 3, ,9 D- 15,5 7,75 6,3 1,3 0,50 0,30 0,20 2,0 5, ,9 D- 21,0 10,50 8,1 1,8 0,60 0,35 0,25 2,5 7, ,9 D- 24,5 12,25 8,1 1,8 0,60 0,35 0,25 3,0 7, ,9 D- 28,0 14,00 9,5 2,5 0,70 0,50 0,30 3,5 8, D-38,0 19,00 13,8 3,0 1,00 0,70 0,60 4,0 12, D Bore diam , , , , , ,

5 Piston Seals SlipRing Working Parameters Pressure SlipRing type up to 40 MPa. SlipRing type up to 20 MPa. For pressures exceeding 40 MPa, please contact your O.L. Seals distributor. Temperature -40 C to +180 C. For temperatures exceeding this temperature range, please contact your O.L. Seals distributor. Velocity Reciprocating up to 15 m/sec. Frequenzy: up to 5 Hz. Should not be used for rotating or oscillating applications. Notches In systems with rapid pressure changes e.g. steering systems, it is necessary to furnish the SlipRings with sidewall notches. The notches ensure a quick seal response due to pressure changes. To order SlipRing with notches add suffix»n«behind compound code. Example: N. Fluids Kefloy is compatible with virtually all fluids liquids as well as gases. By selecting the right material for the O-ring energizer, it is possible to cover almost all fluids. Material selection guide Fluid Mating surface SlipRing compound Motor oil Chromeplated steel Kefloy 13 Cast iron Other minerals oils Aluminium Stainless steel Kefloy 22 Bronze Ultralen 90 Water Water hydraulic Chromeplated steel Steam Cast iron Kefloy 22 Non lubricating fluids Aluminium Kefloy 28 Air, dry or lubricated Stainless steel Ultralen 90 Bronze For other fluids or sealing surfaces, please consult your O.L. Seals distributor. Seal Selection Guide SlipRing Type For double acting applications where pressure does not exceed 40 MPa. SlipRing Type For double acting applications where pressure is below 20 MPa. Light Duty Where a very low friction is required one of the Light Duty is recommended. Where space limitations make it necessary the Light Duty should be chosen. Fluid O-Ring material Motor oil NBR (Buna N) Other mineral oils At temperatures Water hydraulics above 120 C use Air, dry or lubricated Viton O-Ring Water, hot Steam EPDM Synthetic hydraulic Special fluids material O-Ring manufacturers recommendation for the actual fluid should always be followed. O-Ring Size Cross section according to installation chart. O-Ring I.D. as close to groove dia. d as possible. O-Ring I.D. not bigger than d +3%. O-Ring I.D. not smaller than d -5%. Installation Seal series SlipRing can be installed in closed grooves when diameter D is above the following. SlipRing SlipRing compound compound Kefloy 13 Kefloy mm 15 mm 1 15 mm 20 mm 2 20 mm 30 mm 3 40 mm 50 mm 4 80 mm 80 mm mm 130 mm mm 300 mm mm 500 mm See page 22 for further information of installation of SlipRing piston seals. 5

6 Piston Seals SharpSeal SharpSeal type is a very efficient SINGLE ACTING seal. The design of the seal concentrates the sealing forces at the sealing edge. This ensures an excellent leakage control over the whole pressure range. The sealing edge virtually scrapes the sealing surface dry. Where a completely dry sealing surface is required, it is possible to install SharpSeal in tandem as shown on the drawing. The SharpSeal ensures automatic pressure relief between the two seals. No ventilation between the seals is necessary. SharpSeal is also available in a light series. Ordering Example Standard duty SharpSeal Bore diameter: 63,0 mm Medium: Sealing surface: G Part no Seal Type Bore dia. x 10 Compound no O-Ring size 46,99 x 5,33 O-Ring to be ordered separately Ra 0,2 µm Ra 1,6 µm Standard D Bore diam. d diam. S depth L Width R Radius G Radial Gap System pressure C Chamfer O-Ring Cross sec. Light Type no H 9 h 9 + 0,2-0 max. 10 MP 20 MPa 40 MPa Min. Type no ,9 D- 4,9 2,45 2,2 0,4 0,30 0,20 0,15 0,7 1, , ,9 D- 7,3 3,65 3,2 0,6 0,40 0,25 0,15 1,0 2, , ,9 D- 10,7 5,35 4,2 1,0 0,40 0,25 0,20 1,3 3, , ,9 D- 15,1 7,55 6,3 1,3 0,50 0,30 0,20 2,0 5, , ,9 D- 20,5 10,25 8,1 1,8 0,60 0,35 0,25 2,5 7, , ,9 D- 24,0 12,00 8,1 1,8 0,60 0,35 0,25 3,0 7, , ,9 D- 27,3 13,65 9,5 2,5 0,70 0,50 0,30 3,5 8, D- 38,0 19,00 13,8 3,0 1,00 0,70 0,60 4,0 12,00 D Bore diam. 6

7 Piston Seals SharpSeal Working Parameters Pressure Sharp Seal type up to 40 MPa For pressures exceeding 40 MPa, please contact your O.L. Seals distributor. Temperature -40 C to +180 C. For temperatures exceeding this temperature range, please contact your O.L. Seals distributor. Velocity Reciprocating up to 15 m/sec. Frequency: up to 5 Hz. Should not be used for rotating or oscillating applications. Fluids Kefloy is compatible with virtually all fluids liquids as well as gases. By selecting the right material for the O-Ring energizer, it is possible to cover almost all fluids. Material selection guide Fluid Mating surface SlipRing compound Motor oil Chromeplated steel Kefloy 13 Cast iron Other minerals oils Aluminium Stainless steel Kefloy 22 Bronze Ultralen 90 Water Water hydraulic Chromeplated steel Steam Cast iron Kefloy 22 Non lubricating fluids Aluminium Kefloy 28 Air, dry or lubricated Stainless steel Ultralen 90 Bronze For other fluids or sealing surfaces, please consult your O.L. Seals distributor. Seal Selection Guide SharpSeal Type For single acting applications where fluid is a liquid. Can be installed in tandem where an absolutely dry sealing surface is required. Light Duty Where a very low friction is required one of the Light Duty is recommended. Where space limitations make it necessary the Light Duty should be chosen. Fluid O-Ring material Motor oil NBR (Buna N) Other mineral oils At temperatures Water hydraulics above 120 C use Air, dry or lubricated Viton O-Ring Water, hot Steam EPDM Synthetic hydraulic Special material fluids O-Ring manufacturers recommendation for the actual fluid should always be followed. O-Ring Size Cross section according to installation chart. O-Ring I.D. as close to groove dia. d as possible. O-Ring I.D. not bigger than d +3%. O-Ring I.D. not smaller than d -5%. Installation Seal series SharpSeal can be installed in closed grooves when diameter D is above the following. SharpSeal SharpSeal compound compound Kefloy 13 Kefloy mm 15 mm 1 15 mm 20 mm 2 20 mm 30 mm 3 40 mm 50 mm 4 80 mm 80 mm mm 130 mm mm 300 mm mm 500 mm See page 22 for further information of installation of SlipRing piston seals. 7

8 Piston Seals O-Cap O-Cap O-Cap is a double acting seal using the same groove dimensions as an O-Ring. It consists of a Kefloy ring which is the dynamic part of the seal, and an O-Ring. The O-Cap is designed to eliminate the frictional and wear problems, which may occur with rubber O-Rings. There is a range of O-Caps for British and American Standard O-Rings and a range for Swedish standard O-Rings. In each range there are series of O-Caps which fit into O- Ring grooves meant for O-Rings without back-up ring, with one back-up ring and with two back-up rings. Working Parameters Pressure Up to 40 MPa. Temperature -50 C to +180 C, though limited by O- Ring. Velocity Reciprocating up to 15 m/sec. Frequency up to 5 Hz. Ra 0,2 µm Ra 1,6 µm Blend radius Fluids Virtually all fluids, though limited by O- Ring. For working parameters outside the stated, please contact your O.L. Seals distributor. O-Ring Size O-Ring cross section according to installation chart. O-Ring I.D. as close to dia. d as possible. O-Ring I.D. not bigger than d +3% O-Ring I.D. not smaller than d -5% Materials Fluid Mating surface O-Cap compound Motor oil Chromeplated steel Kefloy 32 Cast iron Other minerals oils Aluminium Stainless steel Kefloy 25 Bronze Water Water hydraulic Chromeplated steel Steam Cast iron Kefloy 25 Non lubricating fluids Aluminium Kefloy 28 Air, dry or lubricated Stainless steel Ultralen 90 Bronze Ordering Example O-Cap type for O-Ring + 1 Back-Up Ring O-Ring cross section: 5,33 mm Bore diameter: 112,0 mm Medium: Water Sealing surface: Aluminium Part no Seal Type Bore dia. x 10 Compound no O-Ring to be ordered separately. O-Ring size 100,97 x 5,33 O-Ring to be ordered separately. Installation See piston seal installation recommendations on page 22. O-cap L Width Type no + 0,2 0 O-cap L1 Width Type no + 0,2 0 O-Cap L2 Width Type no + 0,2 0 D d S R G Bore Radius Radial diam. diam. Depth Gap H 10 h 9 max. min. C Chamfer O-Ring Cross sec. O-Ring Standard , , ,3 8-13,9 D - 2,9 1,45 0,4 0,08 0,7 1, , , , ,9 D - 4,5 2,25 0,5 0,10 1,0 2,62 A.S , , , ,9 D - 6,2 3,10 0,6 0,12 1,3 3,53 B.S , , , ,9 D - 9,4 4,70 0,7 0,15 2,0 5, , , , ,9 D - 12,2 6,10 0,8 0,15 2,5 7, , , ,0 8-24,9 D - 4,0 2,0 0,5 0,08 1,0 2, , , , ,9 D - 5,0 2,5 1,0 0,10 1,3 3, , , , ,9 D - 10,0 5,0 1,0 0,12 2,1 5,7 S.M.S , , , ,9 D - 15,0 7,5 1,0 0,15 3,0 8,4 8

9 Scrapers WypeRing WypeRing Type WypeRing is a highly efficient double scraper. It consists of a scraping ring with one external and one internal scraping lip plus an O-Ring which ensures a firm contact between the scraping lip and the piston rod. The external scraping lip wipes the retracting piston rod free from all kinds of dirt, mud, ice, etc. which might stick to the piston rod. The internal lip retains the residual oil film which may pass under the rod seal. Working Parameters Temperature -50 C to +200 C (dependent on O-Ring material). Velocity Reciprocating up to 15 m/sec. Frequency up to 5 Hz. Fluids Virtually all fluids, though limited by O-Ring. Ordering Example WypeRing type Part no WypeRing type Rod dia. 25,0 x 10 Compound no O-Ring size 28,24 x 2,62 O-Ring to be ordered separately. O-Ring Size O-Ring cross section according to installation chart. O-Ring I.D. as close to dia. B as possible. O-Ring I.D. not smaller than B -5%. O-Ring I.D. not bigger than B +3%. Ra 1,6 µm Ra 0,2 µm Blend radius WypeRing d D L R A C O-Ring B Rod Radius Bore Chamfer Cross O-Ring I.D. dia. dia. width dia. section Type no h 9 H 9 +0,2 max. +0,2 min. 0-0, ,9 d + 7,6 4,2 0,6 d + 1,0 0,7 2,62 d + 2, ,9 d + 8,8 6,3 0,6 d + 1,5 1,0 2,62 d + 3, ,9 d + 12,2 8,1 0,8 d + 2,0 1,3 3,53 d + 4, ,9 d + 16,0 9,5 1,3 d + 2,5 2,0 5,33 d + 5, ,9 d + 24,0 14,0 1,5 d + 2,5 2,5 7,00 d + 6, d + 27,3 16,0 2,5 d + 2,5 3,0 8,40 d + 7,0 WypeRing material selection recommendation WypeRings working against hard surfaces such as chrome or hardened steel should be made in Kefloy 32. WypeRings working against soft surfaces such as stainless steel or aluminium should be made in Kefloy 22. WypeRing can be made in any of the Kefloy materials. See material information on page 21. WypeRing installation hints Can be installed in closed groove for dia. > Can be installed in closed groove for dia. > Can be installed in closed groove for dia. > Can be installed in closed groove for dia. > Can be installed in closed groove for dia. > Can be installed in closed groove for dia. > 300 9

10 Rod Seals SlipRing SlipRing type SlipRing is a double acting rod seal. To avoid extrusion at high pressure temperature combinations, SlipRing type is chamfered. It is a heavy duty seal recommended for pressures up to 40 MPa. Where an extremely low friction is required a light series of SlipRing is available. SlipRing Type SlipRing is a double acting rod seal mainly used for lighter applications. SlipRing is not chamfered and should not be used for high pressure temperature combinations. SlipRing is recommended for pressures up to 20 MPa. A light series is available. Ordering Example Double action rod seal Rod diameter: 15,0 mm Medium: Rod material: Chromed steel Part no SlipRing Type Rod dia. x 10 Compound no O-Ring size 18,72 x 2,62 O-Ring to be ordered separately G Blend radius Ra 1,6 µm Ra 0,2 µm Standard d Rod diam. D S L R Radius G Radial Gap diam. depth Width System pressure Type no h 9 H 9 + 0,2-0 max. 10 MPa 20 MPa 40 MPa C B O-Ring Light d Chamfer O-Ring Cross Rod ID section diam. Min. Type no. h ,9 d + 4,9 2,45 2,2 0,4 0,30 0,20 0,15 0,7 d + 2,0 1, , ,9 d + 7,3 3,65 3,2 0,6 0,40 0,25 0,15 1,0 d + 3,4 2, , ,9 d + 10,7 5,35 4,2 1,0 0,40 0,25 0,20 1,3 d + 5,1 3, , ,9 d + 15,1 7,55 6,3 1,3 0,50 0,30 0,20 2,0 d + 6,9 5, , ,9 d + 20,5 10,25 8,1 1,8 0,60 0,35 0,25 2,5 d + 9,5 7, , ,9 d + 24,0 12,00 8,1 1,8 0,60 0,35 0,25 2,5 d + 13,0 7, , ,9 d + 27,3 13,65 9,5 2,5 0,70 0,50 0,30 3,0 d + 14,0 8, d + 38,0 19,00 13,8 3,0 1,00 0,70 0,60 3,5 d + 18,0 12,00 10

11 Rod Seals SlipRing Working Range Pressure SlipRing type up to 40 MPa. SlipRing type up to 20 MPa. For pressures exceeding 40 MPa, please contact your O.L. Seals distributor. Temperature -50 C to +180 C. For temperatures exceeding this temperature range, please contact your O.L. Seals distributor. Velocity Reciprocating up to 15 m/sec. Frequenzy: up to 5 Hz. Should not be used for rotating or oscillating applications. Notches In systems with rapid pressure changes, e.g. steering systems, it is necessary to furnish the SlipRings with sidewall notches. The notches ensure a quick seal response due to pressure changes. To order SlipRing with notches add suffix»n«behind compound code. Example: N. Fluids Kefloy is compatible with virtually all fluids liquids as well as gases. By selecting the right material for the O-ring energizer, it is possible to cover almost all fluids. Material selection guide Fluid Mating surface SlipRing compound Motor oil Chromeplated steel Kefloy 13 Cast iron Other minerals oils Aluminium Stainless steel Kefloy 22 Bronze Ultralen 90 Water Water hydraulic Chromeplated steel Steam Cast iron Kefloy 22 Non lubricating fluids Aluminium Kefloy 28 Air, dry or lubricated Stainless steel Ultralen 90 Bronze Fluid O-Ring material Motor oil NBR (Buna N) Other mineral oils At temperatures Water, cold above 120 C use Water hydraulics Viton O-Ring Air, dry or lubricated Water, hot Steam EPDM Synthetic hydraulic Special material fluids O-Ring manufacturers recommendation for the actual fluid should always be followed. For other fluids or sealing surfaces, please consult your O.L. Seals distributor. Seal Selection Guide SlipRing Type For double acting applications. For standard seal the maximum pressure is 40 MPa. Also suitable for single acting applications where the fluid is a gas. SlipRing Type For double acting applications where pressure is below 20 MPa. Also for single acting applications where the fluid is a gas. O-Ring Size O-Ring cross section according to installation chart. O-Ring I.D. as close to dia. B as possible. O-Ring I.D. not bigger than B +3%. O-Ring I.D. not smaller than B -5%. Light Duty Where a very low friction is required one of the Light Duty is recommended. Where space limitations make it necessary the Light Duty should be chosen. 11

12 Rod Seals SharpSeal SharpSeal Type SharpSeal is a very efficient SINGLE ACTING rod seal. The design of the seal concentrate the sealing forces at the sealing edge. This ensures an excellent leakage control over the whole pressure range. The sealing edge virtually scrapes the rod dry. Where a completely dry rod is required, SharpSeal can be installed in tandem. No ventilation between the seals is required. SharpSeal is recommended for pressures up to 40 MPa. SharpSeal is also available in a light series. Pressure Ordering Example Single acting rod seal Rod diameter: 15,0 mm Medium: Rod material: Chromed steel Part no SharpSeal Type Rod dia. x 10 Compound no O-Ring size 18,72 x 2,62 O-Ring to be ordered separately G Blend radius Ra 1,6 µm Ra 0,2 µm Standard d Rod diam. D S L R Radius G Radial Gap diam. depth Width System pressure Type no h 9 H 9 + 0,2-0 max. 10 MP 20 MPa 40 MPa C B O-Ring Light d Chamfer O-Ring Cross Rod ID section diam. Min. Type no. h ,9 d + 4,9 2,45 2,2 0,4 0,30 0,20 0,15 0,7 d + 2,0 1, , ,9 d + 7,3 3,65 3,2 0,6 0,40 0,25 0,15 1,0 d + 3,4 2, , ,9 d + 10,7 5,35 4,2 1,0 0,40 0,25 0,20 1,3 d + 5,1 3, , ,9 d + 15,1 7,55 6,3 1,3 0,50 0,30 0,20 2,0 d + 6,9 5, , ,9 d + 20,5 10,25 8,1 1,8 0,60 0,35 0,25 2,5 d + 9,5 7, , ,9 d + 24,0 12,00 8,1 1,8 0,60 0,35 0,25 2,5 d + 13,0 7, , ,9 d + 27,3 13,65 9,5 2,5 0,70 0,50 0,30 3,0 d + 14,0 8, d + 38,0 19,00 13,8 3,0 1,00 0,70 0,60 3,5 d + 18,0 12,00 12

13 Rod Seals SharpSeal Working Range Pressure SharpSeal type up to 40 MPa. For pressures exceeding 40 MPa, please contact your O.L. Seals distributor. Temperature -50 C to +180 C. For temperatures exceeding this temperature range, please contact your O.L. Seals distributor. Velocity Reciprocating up to 15 m/sec. Frequency: up to 5 Hz. Should not be used for rotating or oscillating applications. Fluids Kefloy is compatible with virtually all fluids liquids as well as gases. By selecting the right material for the O-ring energizer, it is possible to cover almost all fluids. Material selection guide Fluid Mating surface SlipRing compound Motor oil Chromeplated steel Kefloy 13 Cast iron Other minerals oils Aluminium Stainless steel Kefloy 22 Bronze Ultralen 90 Water Water hydraulic Chromeplated steel Steam Cast iron Kefloy 22 Non lubricating fluids Aluminium Kefloy 28 Air, dry or lubricated Stainless steel Ultralen 90 Bronze Fluid O-Ring material Motor oil NBR (Buna N) Other mineral oils At temperatures Water, cold above 120 C use Water hydraulics Viton O-Ring Air, dry or lubricated Water, hot Steam EPDM Synthetic hydraulic Special material fluids O-Ring manufacturers recommendation for the actual fluid should always be followed. For other fluids or sealing surfaces, please consult your O.L. Seals distributor. Seal Selection Guide SharpSeal Type For SINGLE ACTING applications where the fluid is a liquid. Can be installed in tandem where an absolutely dry rod is required. Light Duty Where a very low friction is required one of the Light Duty is recommended. Where space limitations make it necessary the Light Duty should be chosen. O-Ring Size O-Ring cross section according to installation chart. O-Ring I.D. as close to groove dia. B as possible. O-Ring I.D. not bigger than B +3%. O-Ring I.D. not smaller than B -5%. 13

14 Rod Seals O-Cap O-Cap O-Cap is a double acting seal using the same groove dimensions as an O-Ring. It consists of a Kefloy ring which is the dynamic part of the seal, and an O-Ring. The O-Cap is designed to eliminate the frictional and wear problems, which may occur with rubber O-Rings. There is a range of O-Caps for British and American Standard O-Rings and a range for Swedish standard O-Rings. In each range there are series of O-Caps which fit into O-Ring grooves meant for O-Rings without back-up ring, with one back-up ring and with two back-up rings. Ra 1,6 µm Ra 0,2 µm Blend radius Working Parameters Pressure Up to 40 MPa. Temperature -50 C to +180 C, though limited by O- Ring. Velocity Reciprocating up to 15 m/sec. Frequency up to 5 Hz. Fluids Virtually all fluids, though limited by O- Ring. For working parameters outside the stated, please contact your O.L. Seals distributor. O-Ring Size O-Ring cross section according to installation chart. O-Ring I.D. as close to rod dia. d +1 as possible. O-Ring I.D. not bigger than (d +1 mm) +3% O-Ring I.D. not smaller than (d +1 mm) -5% Materials Fluid Mating surface O-Cap compound Motor oil Chromeplated steel Kefloy 32 Cast iron Other minerals oils Aluminium Stainless steel Kefloy 25 Bronze Ultralen 90 Water Water hydraulic Chromeplated steel Steam Cast iron Kefloy 25 Non lubricating fluids Aluminium Ultralen 90 Air, dry or lubricated Stainless steel Bronze Ordering Example O-Cap type for O-Ring + 2 Back-Up Rings Part no Seal Type Rod dia. 155,5 x 10 Compound no O-Ring size 154,1 x 8,4 O-Ring to be ordered separately. Installation See piston seal installation recommendations on page 22. O-cap L Width Type no + 0,2 0 O-cap L1 Width Type no + 0,2 0 O-Cap L2 Width Type no + 0,2 0 d D S R G C Rod Radius Radial Chamfer diam. diam. depth gap h 9 H 10 max. max. min. O-Ring Cross sec. O-Ring Standard , , ,3 4-9,9 d + 2,9 1,45 0,4 0,08 0,7 1, , , , ,9 d + 4,5 2,25 0,5 0,10 1,0 2,62 A.S , , , ,9 d + 6,2 3,10 0,6 0,12 1,3 3,53 B.S , , , ,9 d + 9,4 4,70 0,7 0,15 2,0 5, , , , ,9 d + 12,2 6,10 0,8 0,15 2,5 7, , , ,0 4-19,9 d + 4,0 2,0 0,5 0,08 1,0 2, , , , ,9 d + 5,0 2,5 1,0 0,10 1,3 3, , , , ,9 d + 10,0 5,0 1,0 0,12 2,1 5,7 S.M.S , , , ,9 d + 15,0 7,5 1,0 0,15 3,0 8,4 14

15 Back-Up Rings BakRing BakRing Prevents extrusion of O-Ring Increases service life of O-Ring. Three standard types. Type S spiral Type U Uncut Type C Cut Dynamic: Ra 0,2 µm Static: Ra 0,8 µm Blend radius Ra 1,6 µm Dynamic: Static: Ra 0,2 µm Ra 0,8 µm Blend radius Ra 1,6 µm Dynamic: Ra 0,2 µm Static: Ra 0,8 µm Blend radius Ra 1,6 µm Dynamic: Static: Ra 0,2 µm Ra 0,8 µm Blend radius Ra 1,6 µm BakRing installation dimensions do O-Ring Cross do O-Ring Cross d Internal diam. D External diam. S depth L1 Width L2 Width R Radius G Radial gap C Chamfer W Bak Ring thickness T Bak Ring width sec. sec. h 9 H 9 + 0,2 + 0,2 Max. Max. Min. B.S. SMS A.S ,6 D - 2,6 d + 2,6 1,30 3,0 4,0 0,2 0,05 0,5 1,30 1,0 1,78 D - 2,9 d + 2,9 1,45 3,8 5,3 0,3 0,06 0,6 1,45 1,4 2,4 D - 4,0 d + 4,0 2,00 4,6 6,0 0,3 0,06 0,6 2,00 1,4 2,62 D - 4,5 d + 4,5 2,25 4,6 6,2 0,3 0,07 1,0 2,25 1,4 3,0 D - 5,0 d + 5,0 2,50 5,4 6,8 0,3 0,07 1,0 2,50 1,4 3,53 D - 6,2 d + 6,2 3,10 5,7 7,7 0,5 0,08 1,3 3,10 1,4 5,33 D - 9,4 d + 9,4 4,70 8,5 10,8 0,5 0,10 2,0 4,70 1,7 5,7 D - 10,0 d + 10,0 5,00 9,3 11,1 0,5 0,10 2,0 5,00 1,7 7,0 D - 12,2 d + 12,2 6,10 11,2 14,7 0,6 0,13 2,5 6,10 2,5 8,4 D - 15,0 d + 15,0 7,50 13,2 15,4 0,6 0,13 3,0 7,50 2,5 Materials BakRings are normally made in the very extrusion resistant Kefloy 60, which is a blue, glass filled modified PTFE. Where the BakRing is in direct contact with food or drugs, virgin PTFE Kefloy 11 is recommended. A range of other materials are available on request. Ordering Example Uncut BakRing Internal diameter: 55,0 mm depth: 2,5 mm Part no U BakRing type Internal housing dia. x 10 External housing dia. x 10 BakRing width x 10 Compound no 15

16 Rotating Seals TurnRing TurnRing Type and Are double acting seals for rotating applications. It consists of a seal-ring of Kefloy energized by a rubber O-Ring. The seal configuration ensures an efficient leakage control over the whole pressure range from zero to 40 MPa. The very low friction and the non stick-slip properties of the Kefloy compounds ensure a smooth operation. The small installation dimensions allow a compact design of the hardware. This is a major advantage in e.g. swivel joints with many ports. Working parameters Pressure: From zero to 40 MPa. Temperature: -40 C to +180 C (dependent on O-Ring material). Velocity: Continuous up to 1 m/sec. Intermittent up to 5 m/sec. Fluids: Kefloy is compatible with virtually all fluids liquids as well as gases. By selecting the right material for the O-Ring energizer, it is possible to cover almost all fluids. Service life: The service life of TurnRing is affected by a great number of factors. The most important factors are pressure, velocity, surface finish, fluid, and the possibility for the seal to get rid of the generated heat. Only tests with the actual working parameters will determine the exact service life. TurnRing installation Ordering Example Bore diameter: 65,0 mm Medium: Sealing surface: Part no N TurnRing Type Bore dia. x 10 Compound no Suffix for Notch O-Ring size 56,82 x 2,62. O-Ring to be ordered separately. Outside Sealing Ra 0,2 µm Ra 1,6 µm G Turn-Ring D d S L R G C B O-Ring Bore Radius Radial Chamfer O-Ring I.D. Cross dia. dia. depth width gap section Type no H 9 h 9 +0,2 max. 10MPa 20MPa min ,9 D - 4,9 2,45 2,2 0,4 0,15 0,10 0,7 d 1, ,9 D - 7,5 3,75 3,2 0,6 0,20 0,15 1,0 d 2, ,9 D - 11,0 5,50 4,2 0,8 0,25 0,20 1,3 d 3, ,9 D - 15,5 7,75 6,3 1,3 0,30 0,25 2,0 d 5, ,9 D - 21,0 10,50 8,1 1,5 0,30 0,25 2,5 d 7, ,9 D - 28,0 14,00 9,5 2,5 0,45 0,30 3,0 d 8,40 16

17 Rotating Seals TurnRing Features Excellent wear resistance Extrusion resistant Low friction No stick-slip Small installation dimensions Excellent chemical resistance No vulcanisation Advantages Long service life High pressure and temperature stability Low operating torque Smooth operation Compact design Compatible with most fluids No damage after standstill Material Selection Guide Fluid Mating surface TurnRing compound Motor oil Chromeplated steel Kefloy 66 Cast iron Other minerals oils Aluminium Stainless steel Kefloy 22 Bronze Ultralen 90 Water Water hydraulic Chromeplated steel Steam Cast iron Kefloy 22 Non lubricating fluids Aluminium Ultralen 90 Air, dry or lubricated Stainless steel Bronze For other fluids or sealing surfaces, please consult your O.L. Seals distributor. Fluid O-Ring material Motor oil NBR (Buna N) Other mineral oils At temperatures Water, cold above 120 C use Water hydraulics Viton O-Ring Air, dry or lubricated Water, hot Steam EPDM Synthetic hydraulic Special material fluids O-Ring manufacturer s recommendation for the actual fluid should always be followed. TurnRing installation Ordering Example Shaft diameter: 125,3 mm Medium: Water Sealing surface: Inside Sealing Ra 1,6 µm Ra 0,2 µm Part no TurnRing Type Shaft dia. x 10 Compound no Suffix for Notch N G Blend radius O-Ring size 129,77 x 3,53. O-Ring to be ordered separately. ød ød Turn-Ring d D S L R G C B O-Ring Rod Radius Radial Chamfer O-Ring I.D. Cross dia. dia. depth width gap section Type no h 9 H 9 +0,2 max. 10MPa 20MPa min ,9 d + 4,9 2,45 2,2 0,4 0,15 0,10 0,7 d + 2,0 1, ,9 d + 7,5 3,75 3,2 0,6 0,20 0,15 1,0 d + 3,4 2, ,9 d + 11,0 5,50 4,2 0,8 0,25 0,20 1,3 d + 5,1 3, ,9 d + 15,5 7,75 6,3 1,3 0,30 0,25 2,0 d + 6,9 5, ,9 d + 21,0 10,50 8,1 1,5 0,30 0,25 2,5 d + 9,5 7, ,9 d + 28,0 14,00 9,5 2,5 0,45 0,30 3,0 d +14,0 8,40 17

18 Wear Rings GuideStrip GuideStrip The use of GuideStrip ensures an accurate and smooth travel of sliding parts. It prevents metal-to-metal contact and scoring of the surfaces. The precise guiding and the preservation of perfect surfaces are essential for trouble-free functioning of the seals. GuideStrip also protects the seals against diesel-effect and, to some degree, prevents eventual contamination reaching the seals. Precise guiding Wear resistant High load capacity No stick-slip Damping of mechanical vibrations Prevent migration of dirt Easy to install Prevent galling of surfaces Working Range Load capacity: Depends on working temperature. Dimensioning of GuideStrip is described on page 20. Temperature range: -40 C to +180 C. Velocity: Reciprocating up to 15 m/sec. Frequency: Up to 10 Hz Rotating: Up to 1 m/sec. Fluids: GuideStrip is compatible with virtually all fluids lubricating as well as non lubricating. Availability GuideStrips are delivered either in fixed length or in strip form in rolls. Special thicknesses and widths are delivered on request. Angle cut But cut Z-cut Type A Type B Type Z Materials Selection Guide Fluid Mating surface GuideRing material Motor oil Chromeplated steel Kefloy 13 Cast iron Other minerals oils Aluminium Stainless steel Kefloy 22 Bronze Ultralen 90 Water Steam Chromeplated steel Non lubricating fluids Cast iron Kefloy 22 Air, dry or lubricated Aluminium Ultralen 90 Stainless steel Bronze 18

19 Wear Rings GuideStrip Installation Dimensions GuideStrip W T S L R G D d GuideStrip GuideStrip Radius Radial Extern. Intern. thickness width depth width gap dia. dia. Type no +0,2 max H8 h ,5 3,0 1,5 3,2 0,3 d +3,0 D -3, ,0 4, ,4 5, ,1 6, ,9 8, ,5 9, ,0 14,8 2,0 15,0 0,3 d +4,0 D -4, ,5 20, ,5 25, ,5 30, ,5 50, ,0 4, ,4 5, ,1 6, ,9 8, ,5 9, ,5 14,8 2,5 15,0 0,3 d +5,0 D -5, ,5 20, ,5 25, ,5 30, ,5 50,0 Other dimensions at request. See clearance for the actual seal GuideStrip for piston Ordering Example Piston diameter: GuideStrip width: GuideStrip thickness: Medium: Mating surface: 150,0 mm 19,5 mm 2,5 mm Oil Part no P A-13 Piston Type GuideStrip thickness x 10 GuideStrip width x 10 Bore diameter x 10 Cut type Compound no GuideStrip length: L = 3,115 (150,0-2,5) - 1,0 = 458,5 mm. GuideStrip for rod Ordering Example Rod diameter: GuideStrip width: GuideStrip thickness: Medium: Rod material: 50,8 mm 9,5 mm 2,0 mm Water Cromed steel Part no R Z-22 Rod Type GuideStrip thickness x 10 GuideStrip width x 10 Rod diameter x 10 Cut type Compound no GuideStrip length: L = 3,115 (50,8 + 2,0) - 1,0 = 163,5 mm. 19

20 Wear Rings GuideStrip Dimensioning of GuideStrip When calculating the force a GuideStrip can carry, use formula: ➀ F = d x T x P s F: Force carrying capacity of one GuideStrip d: Internal diameter of GuideStrip T: Width of GuideStrip P s : Specific load capacity of GuideStrip material at the actual working temperature. Is found from Load-Temperature diagram ➀. Example: Guidetrip R A-13 Working temperature 80 C d = 80 mm T = 14,8 mm P s = 10 N/mm 2 F 80 mm x 14,8 mm x 10 N/mm 2 = N Deformation Deformation under load is found from Load-Deformation diagram ➁. Friction Coefficient of friction is influenced by a great number of factors such as surface finish, fluid, load and velocity. As a rule the following coefficients of friction can be used: Lubricated applications: µ = 0,08 Unlubricated applications: µ = 0,12 ➁ Calculation of length To allow for thermal expansion GuideStrip is made slightly shorter than the circumference of the part they guide. This leaves a smal gap X. Internal applications (for rod) L = 3,115 (ød + W) 1,0 ød = Rod diameter W = GuideStrip thickness External applications (for bore) L = 3,115 (ød - W) 1,0 ød = Bore diameter W = GuideStrip thickness Cut Types GuideStrip can be furnished with three different types of cut A, B or Z. A: Angle cut 30 For reciprocating applications B: But cut 90 For rotating applications. Z: Step cut For special applications. GuideStrip Thickness For ease of installation thin sections of GuideStrip should be used for small diameters. For diameters below 25 mm, GuideStrip thickness of 1,5 mm is recommended. For diameters below 40 mm, GuideStrip thickness of 2,0 mm is recommended. Ordering example when ordering in meters GuideStrip thickness: 2,5 mm GuideStrip width: 9,5 mm Required length: 75 m Required compound: Kefloy 22 ORDER: 75 m

21 Materials Compound Kefloy 11 Kefloy 13 Kefloy 18 Kefloy 22 Kefloy 25 Kefloy 28 Kefloy 32 Kefloy 40 Kefloy 60 Kefloy 66 Ultralen Composition Virgin PTFE Colour: White Modified PTFE Bronze Colour: Light green Modified PTFE Bronze Colour: Light green Modified PTFE Carbon Graphite Colour: Black Modified PTFE Carbon Colour: Black Modified PTFE Carbon fibre Graphite Colour: Dark Grey Modified PTFE Colour: Turquoise Modified PTFE Ekonol Colour: Beige Modified PTFE Glass fibre Colour: Light blue Modified PTFE Glass fibre MoS2 Colour: Grey Ultra high molecular weight polyethylene Colour: White Properties Very good chemical resistance Very low friction Limited wear resistance Good dielectric properties Very good wear resistance Very good extrusion resistance Good compressive strength Very good wear resistance High compressive strength Medium coefficient of friction Good chemical resistance Good dry run properties Runs well against mild surfaces Good chemical resistance Good dry run properties Runs well against mild surfaces Softer and more flexible than Kefloy 22 Very good wear resistance Very good extrusion resistance Medium coefficient of friction Very good chemical resistance Very low friction No stick-slip Very good wear resistance Very good extrusion resistance Very low coefficient of friction Very gentle to mating surface Very good extrusion resistance High compressive strength Good chemical resistance Good wear resistance Very good abrasion resistance Good chemical resistance Very good properties at low temperatures Sensitive to higher temperatures Operating Range Velocities up to 5 m/sec. Pressures: static up to 30 MPa Pressures: dynamic up to 20 MPa Temperatures: static -100 to +250 C Temperatures: dynamic -40 to +225 C Velocities up to 15 m/sec. Pressures: static up to 80 MPa Pressures: dynamic up to 60 MPa Temperatures: static -100 to +250 C Temperatures: dynamic -40 to +225 C Velocities up to 15 m/sec. Pressures: static up to 90 MPa Pressures: dynamic up to 70 MPa Temperatures: static -100 to +250 C Temperatures: dynamic -40 to +225 C Velocities up to 15 m/sec. Pressures: static up to 50 MPa Pressures: dynamic up to 40 MPa Temperatures: static -100 to +250 C Temperatures: dynamic -40 to +225 C Velocities up to 15 m/sec. Pressures: static up to 30 MPa Pressures: dynamic up to 20 MPa Temperatures: static -100 to +250 C Temperatures: dynamic -40 to +225 C Velocities up to 15 m/sec. Pressures: static up to 90 MPa Pressures: dynamic up to 70 MPa Temperatures: static -100 to +250 C Temperatures: dynamic -40 to +225 C Velocities up to 15 m/sec. Pressures: static up to 30 MPa Pressures: dynamic up to 20 MPa Temperatures: static -100 to +250 C Temperatures: dynamic -40 to +225 C Velocities up to 15 m/sec. Pressures: static up to 40 MPa Pressures: dynamic up to 30 MPa Temperatures: static -100 to +250 C Temperatures: dynamic -40 to +225 C Velocities up to 15 m/sec. Pressures: static up to 60 MPa Pressures: dynamic up to 50 MPa Temperatures: static -100 to +250 C Temperatures: dynamic -40 to +225 C Velocities up to 15 m/sec. Pressures: static up to 40 MPa Pressures: dynamic up to 30 MPa Temperatures: static -100 to +250 C Temperatures: dynamic -40 to +225 C Velocities up to 5 m/sec. Pressures: static up to 60 MPa Pressures: dynamic up to 50 MPa Temperatures: static -150 to +90 C Temperatures: dynamic -150 to +80 C Applications Light duty Chemical industry Food and drug (FDA) BakRings Heavy duty. Standard compound for hydraulic systems. Not for direct contact with food and drug SlipRings Very heavy duty Hydraulic systems Not for direct contact with food and drug SlipRings Heavy duty Unlubricated systems Water hydraulic Pneumatic systems SlipRings WypeRings GuideStrips Medium duty Unlubricated systems Water hydraulic Pneumatic systems O-Caps Very heavy duty oil and water hydraulic systems Not for direct contact with food and drug SlipRings TurnRings GuideStrips Medium duty Hydraulic systems SlipRings O-Caps WypeRings Heavy duty oil and water hydraulic SlipRings Sharp Seals O-Caps WypeRings GuideStrips Heavy duty BakRings Medium duty Hydraulic systems Pneumatic systems SlipRings WypeRings GuideStrips Heavy duty Dry pneumatic systems Lubricated pneumatic systems Water hydraulic Chemical industries Food and drug (FDA) SlipRings WypeRings 21

22 Installation Hints Important For all installation of seals it is important not to scratch the sealing surfaces. 1. Avoid sharp edges on seal housings. 2. Use tools that are smooth and free of burrs. 3. Keep everything clean. depth to suit Length equal to overall length of mandrel Installation of External Seals on Pistons For installation of bigger series of seals, it is convenient to make a set of assembly tools. It consists of a tapered mandrel and a pusher made of acetal or similar plastic. Seals are pushed over the mandrel into the groove by a quick push. For installation of a few seals, two pieces of strapping used as shown at fig. 2 and 3 are sufficient. Where the piston has to be installed in a bore without an inlet chamfer, a calibrating tool will facilitate the installation. See fig. 4. Installation of Internal Seals in Glands Installation of small diameter internal seals requires open grooves. For bigger diameter seals it is possible to assemble by collapsing the seal as shown on fig. 5 and 6. After installation of the seal it should be calibrated by a well chamfered and smooth rod of acetal or similar plastic. ➀ ➁ ➂ Flat ➅ Size Internal Cross no diameter sec , , , ,47 1, , , , , , , , , , , , , , , , , , ,24 2, , , , , , , , , , , , , ,90 Size Internal Cross no diameter sec , , , , , , ,99 2, , , , , , , , , , , , , , , , , , , ,52 3, , , , , , , , , , , ,27 A.S. and B.S. O-Ring dimensional list Size Internal Cross no diameter sec , , , , , , , , , , , , ,54 3, , , , , , , , , , , , , , , , , , , , ,52 5, , , , ,22 ➄ Size Internal Cross no diameter sec , , , , , , , , , , , , , , , ,02 5, , , , , , , , , , , , , , , , , , , , ,27 ➃ Size Internal Cross no diameter sec , , , , , , ,07 5, , , , , , , , , , , , , , , , , , ,77 7, , , , , , , , , , , ,67 Size Internal Cross no diameter sec , , , , , , , , , , , , ,26 7, , , , , , , , , , , , , , ,88 22

23 Specials Besides the standard series of seals and wear rings O.L. Seals also manufacture special seals and custom designed items. The advanced manufacturing technique on CNC machinery makes it possible to produce special seals in a rational manner. In the great range of Kefloy and Ultralen compounds with their variety of remarkable properties it is always possible to find a material which suits the application. Our technical experts, with many years of experience in solving sealing problems, offer their assistance in designing of seals and in selection of the right Kefloy or Ultralen compound. 23

24 O.L. Seals A/S Bymosevej 14 DK-3200 Helsinge Denmark Phone Fax Web: Mail: