Rubber Sheet Gasket Material

Rubber Gasketing

Nitrile Rubber (Buna-N) Trade Names

Chemigum Hycar (Zeo (Goodyear)n Chemical) Ny Syn (Copolymer) Paracril (Uniroyal) Krynac (Polysar) Perbunan (Mobay)

The most widely used elastomer. Excellent resistance to petroleum products. Excellent compression set, tear and abrasion resistance. Does not have good resistance to ozone, sunlight, or weather, unless specifically compounded. Should not be stored in direct sunlight or near motors or other electrical equipment which may generate ozone.

Temperature range: -40° to +250°F.

Fluorocarbon (Viton, FKM or Fluorel) Fluorocarbon (FKM) is a high tech. elastomer designed for extreme heat, oil and chemical resistance. Viton resists aliphalactic aromatic and halogenated hydrocarbons, concentrated acids, alkalis, animal and vegetable oils.- 75 durometer is preferred. Avoid colored (brown or green) grades; the clay fillers used to replace carbon black are subject to chemical attack.

Temperature range: -20 F to +400 F

EPDM - Ethylene Propylene Diene Monomer :

EPDM is a black plate finish sheet with superior resistance to weathering, ozone and UV exposure. EPDM also provides excellent chemical resistance*, and good electrical properties. EPDM resists animal and vegetable oils, steam, water and oxygenated solvents.

Peroxide cured grades are preferred.

Temperature range: -65 F to +300 F

Chloroprene (Neoprene

Trade Names: Neoprene (E.l. duPont), Butachlor (Ditsugil), Bayprene (Mobay)

Moderately resistant to petroleum products. Good Ozone and weather resistance. Good compression set. Excellent for sealing refrigeration fluids such as Freon®.

Temperature range -65o F to +250o F.

Silicone sheet gasket material is a very versatile material ideal for a wide range of applications. Silicone rubber gasket material offers temperature resistance, weather (UV and ozone) resistance, and fire resistance . Silicone gasket material has very good compression set resistance allowing it to maintain a proper seal over many years

Temperature range: on most silicone gasket materials is -80o F to +450o F

Red Rubber - Styrene Butadiene Rubber Sheet. Recommended for low applications such as washers and gaskets for the heating and plumbing trades. Low cost flange gasket material. Non-oil resistant compound that resists flow under compression. Offers moderate to good performance against low pressure. Good aging and abrasion resistance. Easily conforms to uneven flange load.

Durometer - 75 +/-10/-5. Tensile strength - 400 PSI. Temperature range: - 20°F to +180°F continuous - 210°F intermittent. Red color. Cost: Low

Aflas - Preferred for combinations of oil and amines or ammonia: sour crude oil, sour gas, refrigeration. Aflas is an elastomeric based flouorubber, a copolymer of tetrafluroethlene and propylene. This elastomer offers excellent chemical resistance qualities, with serviceability in the temperatures up to 550 degrees F depending on environment. Services where Aflas sheet might be applicable include inorganic acids, alkalis, high temperature steam, polar solvents, organic bases, hydrocarbon oils, amines and amine corrosion inhibitor systems, and hydrogen sulfide bearing fluids.

-Temperature range: -20°F to +400° F (excursions to +600° F)

Perfluoroelastomer (Kalrez, Chemraz) - Supplied for some chemical and high temperature applications. Kalrez compound 4079 is most common, and offers improved compression set resistance over compound 1050