Flexural Modulus = 390,000psi (2,689Mpa) 421kJ/m 2 Tensile Impact Strength <0.02mm/mm Elongation in 15,000hrs at 3,000psi at 99 C (210 F)

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1 IF 24, page 1 Products Made From Polysulfone This document applies to the following products: TwistSeal (55 mm) and TwistSeal Mini (40mm) Manifolds (excluding TwistSeal Mini Multiport modules) HPP fittings, HPP Multiport Tees Polysulfone, The Material Polysulfone is a strong thermoplastic that can be extruded, molded or thermoformed into a wide range of shapes and products. Most plastics require a chemical modifier to become a heat stable material. Polysulfone however, has heat stability in its unmodified or natural form. The addition of chemical modifiers can add both favorable and non-favorable characteristics to the product. Polysulfone is the strongest and most heat resistant thermoplastic available today. The range of temperatures where polysulfone offers useful characteristics is from 101 C (150 F) to 149 C (300 F) and over a long period of time. The raw polysulfone is transparent with a light amber color. To achieve a uniform black color, which is seen in the HeatLink products, a carbon black coloring agent is evenly distributed by the polysulfone manufacturer. Table #1 highlights some of the main properties of polysulfone. Property Transparent Rigid Tough Low Creep High Continuous erature Use Description Light Amber Color Flexural Modulus = 390,000psi (2,689Mpa) 421kJ/m 2 Tensile Impact Strength <0.02mm/mm Elongation in 15,000hrs at 3,000psi at 99 C (210 F) 140 to 160 C (284 to 320 F) Table #1. Highlights of the Polysulfone Properties* Polysulfone is important to the structural plastics class because it provides better economics and performance than the materials that were available years ago. Chemical Structure Polysulfone has the following repeating unit as its backbone. Polymers are made up of long chains and these units can repeat as high as 80 times in one chain. The molecular structure is composed of phenylene units that are linked by three different chemical groups: isoproplidene, ether and a sulfone unit (see Figure 1). Each of these groups contributes specific properties to the polymer. The most distinctive feature of the backbone is the diphenylene sulfone group. The influence of the diphenylene sulfone group (see Figure 2) on the properties of the polymer has been the focus of intense research since the early 1960 s by the Union Carbide laboratories. It was expected that polymers with this group would have excellent thermal and oxidative properties due to the electronic and chemical nature of the group. CH 3 C S CH 3 n=50 to 80 Figure #1. Molecular Structure of Polysulfone* S Figure #2. The Diphenylene Sulfone Group*

2 IF 24, page 2 General Characteristics Polysulfone is available in a large range of colors. Colors can be added by pre-compounding or by dry coloring the natural material with soluble dyes. The addition of carbon black to the polysulfone has been found to significantly improve the weathering resistance of the polymer when being considered for outdoor applications. Polysulfone is used in a variety of applications that include the electrical, appliance and medical fields. Polysulfone can also be used to make plastic films or sheets if required. Chemical and Solvent Resistance The HeatLink chemical resistance list is based upon information in the professional literature. The list is only intended as a guide. Changes in the composition of the medium or special working conditions could lead to deviations. It is recommended to consult the experts from HeatLink in each specific case. The first list is a general table of chemicals and solvents and their affect on polysulfone parts. The legend is: o Effect Chemical or Solvent Resistance PS Partially Soluble or Swells Inorganic Acids S Soluble Alkalis A Chemically Attacked Alcohols ->PS U Undetermined (Further Investigation Required) Aliphatic Hydrocarbons Aromatic Hydrocarbons PS Chlorinated Hydrocarbons S Table #2. Chemical and Solvent Resistance*

3 IF 24, page 3 Inorganic Chemicals Sulfuric Acid Turned cloudy U Sulfuric Acid Turned cloudy U Sulfuric Acid Slightly darkened U Sulfuric Acid Slightly darkened U Sulfuric Acid Slightly darkened U Sulfuric Acid Slightly darkened U Sulfuric Acid Dissolved S Hydrochloric Acid Hydrochloric Acid Hydrochloric Acid Hydrochloric Acid Phosphoric Acid Phosphoric Acid Phosphoric Acid itric Acid itric Acid Severe surface decomposition A itric Acid itric Acid Slight surface yellowing U itric Acid Attacked and Discolored A Hydrofluoric Acid Chromic Acid Chromic Acid Surface attacked A Hydrobromic Acid Hydrobromic Acid Surface attacked A Sodium Hydroxide Sodium Hydroxide Sodium Hydroxide Cracked and blistered A Sodium Hydroxide Sodium Hydroxide Cracked and blistered A Potassium Hydroxide Potassium Hydroxide Sodium Hypochlorite Sodium Hypochlorite Calcium Hypochlorite Turned cloudy U Ammonium Hydroxide Ammonium Hydroxide Hydrogen Peroxide Calcium Chloride Sat d 7 22 Cupric Chloride Sat d Zinc Chloride Sat d Antimony Trichloride Sat d Specimen dissolved S Potassium itrate Sat d Ferrous Sulfate Sat d Black Liquor /A Surface darkened and roughened U Green Liquor /A Chlorine (Wet) /A Severe surface attack A Water * o comment indicates no visible change. Table #3. Chemical Resistance of Polysulfone to Inorganic Chemicals**

4 IF 24, page 4 rganic Chemicals Acetic Acid Acetic Acid Acetic Acid Severely hardened and opaque A Glacial Acetic Acid /A Acetic Anhydride /A Swelled and softened PS Acetonitrile Badly cracked A Citric Acid Formic Acid Lactic Acid Turned opaque U Lauric Acid Surface cracked and turned opaque A leic Acid xalic Acid Cellosolve Solvent Ethanol Butanol Carbitol Solvent (Diethylene Glycol Monoethyl Ether) Formaldehyde Severely blistered PS Furfural /A Immediate attack A Methanol Morpholine /A Immediate Attack A Cyclohexane Glycerine Butyl Acetate Very soft PS Butyl cellosolve Ethylbutyric Acid Ethylenediamine Isopropyl Ether Badly cracked A Monoethanolamine % Acetone and Water /A 7 22 Ethylene Glycol Carbon Tetrachloride Ethyl Acetate Softened and swollen PS 1,1,1-Trichloroethane * o comment indicates no visible change. Table #4. Chemical Resistance of Polysulfone to rganic Chemicals**

5 IF 24, page 5 Industrial, Aircraft and Automotive Chemicals Aviation Gasoline /A umerous small cracks on the edge A Crude il (East Texas) Low to intermediate in aromatics PS Kerosene Motor il (#10) Brake Fluid Transmission il (Hy-tran) Crazed at 138 C A Jet Fuel (JP-4) Gasoline Diesel Fuel Heat Transfer Liquid Badly cracked A ASTM #1 il ASTM #2 il ASTM #3 il Hydraulic il (Hydroyl 50) Lubricating il (Esstic 50) Lubricating il (Terresso 43) Lubricating il (Terresso 85) il Additive (STP) Hydraulic il (Gulf Harmony) Hydraulic il (Harmony C-53) Turbine il (Sunvis 975) Hydraulic il (Mobil DTE-HH) Mil H-5606 (Mobil-Aerolube) Skydrol 500A Dissolved S Gulf Seneca il # * o comment indicates no visible change. Table #5. Chemical Resistance of Polysulfone to Industrial, Aircraft and Automotive Chemicals** Miscellaneous Chemicals Degreasing Cleaner ld Salt Inhibited Acid Drain Cleaner Surface attacked A Photographic Film Developer /A 7 22 Photographic Film Fixer Household Detergent (Joy) Household Cleaner (Lestoil) Wetting Agent (Tergitol 7) Detergent (Hospital) /A 7 22 Surfactant (Jet-Dry) Coolanol Refrigerant #25 As rec d Coolanol Refrigerant #25 As rec d * o comment indicates no visible change. Table #6. Chemical Resistance of Polysulfone to Miscellaneous Chemicals**

6 IF 24, page 6 Type of Compound Compound High Stress >2,000psi (>13.8Mpa) on-solvent on-solvent on-solvent Partial Solvent Good Solvent Trichlorotrifluroethane Ammonia Detergents and soaps (Tide, Cascade, Alconox, Joy, Ivory Snow) Freon TWD 602 1% Lestol Solution Kerosene Mineral Spirits (Varsol) Regular Gasoline Heptane Alcohol aphtha Cellosolve Solvent Turpentine Freon TF and Ethanol Carbon Tetrachloride 1,1,1-Trichloroethane Freon TA Esters (ethylacetate) Toluene Xylene Benzene Acetone Methyl Ethyl Ketone Methylene Chloride Trichloroethylene Cyclohexanone Chloroform Chlorobenzene Tetrachloroethylene 1,1,2,2-Tetrachloroethane Low Stress Unstressed <1,000psi Prolonged Under 1 (<6.9Mpa) Exposure Minute Little or no effect o effect o effect o effect Severe cracking and crazing Little or no effect o effect o effect Cracking Possible crazing /A o effect Cracking and fracture Cracking, fracture and softening of the surface Severe cracking and crazing Softening of the surface and probable cracking Swells and softens Dissolves o effect Softening of the surface Table #7. Chemical Resistance of Polysulfone to Cleaning Systems** ** Chemical resistance data is adopted from: BP Amoco Polymers, Inc. Design Engineering Data Handbook 4500 McGinnis Ferry Road, Alpharetta, GA USA,

7 IF 24, page 7 rganic Chemicals Table #8. Chemical Resistance of Polysulfone to Household Chemicals. Critical Stress (psi) Black Flag o Effect >4000 Black Flag o Effect >4000 Black Flag o Effect >4000 Comet w/ Bleach Powder o Effect >4000 Comet w/ Bleach Powder o Effect >4000 Comet w/ Bleach Powder Test ot Performed /A U Easy-off Severe Surface Attack 1000 A Easy-off Severe Surface Attack <500 A Easy-off Test ot Performed /A U Fantastik o Effect >4000 Fantastik o Effect >4000 Fantastik o Effect >4000 Ivory o Effect >4000 Ivory Crazed 3000 A Ivory Crazed 1000 A Jet Dry Severe Surface Attack 1000 A Jet Dry Severe Surface Attack <1000 A Jet Dry Severe Surface Attack <1000 A Lemon Pledge Immediate Attack 2000 A Lemon Pledge Immediate Attack 2000 A Lemon Pledge Test ot Performed /A U Lime-Away o Effect >4000 Lime-Away o Effect >4000 Lime-Away Test ot Performed /A U Lysol Immediate Attack 2000 A Lysol Immediate Attack 2000 A Lysol Test ot Performed /A U Mr. Clean (Antibacterial) Severe Surface Attack 2000 A Mr. Clean (Antibacterial) Severe Surface Attack 500 A Mr. Clean (Antibacterial) Test ot Performed /A U Pine-Sol Severe Surface Attack 1000 A Pine-Sol Severe Surface Attack 500 A Pine-Sol Test ot Performed /A U Raid Slightly Crazed 2000 A Raid Crazed 1000 A Raid Severe Surface Attack <1000 A Shout Cracked 2000 A Shout Severe Surface Attack <1000 A Shout Severe Surface Attack <1000 A Simple Green Severe Surface Attack 1000 A Simple Green Severe Surface Attack <1000 A Simple Green Severe Surface Attack <1000 A Solder Flux o Effect >4000 Solder Flux Crazed 3000 A Solder Flux Crazed 1000 A Sunlight Dishwashing Soap o Effect >4000 Sunlight Dishwashing Soap o Effect >4000 Sunlight Dishwashing Soap Test ot Performed /A U Tilex Mildew Remover o Effect >4000 Tilex Mildew Remover o Effect >4000 Tilex Mildew Remover Test ot Performed /A U Ultra Chlorox Attacked 4000 A Ultra Chlorox Attacked 2000 A Ultra Chlorox Test ot Performed /A U

8 IF 24, page 8 Plumbing and Heating Industry Chemicals Ethylene Glycol Propylene Glycol Molybdate-based Corrosion Inhibitor (#01205) -ring Lubricant (#79951, #79952) PVC Glue Dissolves A Solder Flux Crazed A Spray Foam Insulation Do not allow contact with spray foam. U * o comment indicates no visible change. Table #9. Chemical Resistance of Polysulfone to Plumbing and Heating Industry Chemicals