NAME	Composition	Genral Application	Temprature Limit	Other Limits	Avalability
EPDM	Ethylene - Propylene Terpolymer	Hot and Cold Water -Steam - Sea water - Brine-Esters-Ketone Alkalis-Caustic Soda	-45°C     -49°F +120°C  +248°F	Not recommanded for hydrocarbons-oils-fats	Normal Stock
BUNA N (NBR)	Copolymer of Butadien;	Hydrocarbons Natural Gas Oils and fat- Air- Hot and Cold Water- Seawater -Gasoline	-20°C      -4°F +80°C     +176°F	Not recommanded for Solvents - Benzene- Xylol	Normal Stock
Neoprene	Chloro butadiene	Water - Greases - Some oils Ailu Diluted mineral acids	- 25°C      -13°F +100°C    +212°F	Not recommanded for Ketones-thinners Consentrated acids	-
Hypalon (CSM)	Chlorosulfonated Polyethylene	Mineral acids Organic acids Oxidising substances Oils and Greases	-30°C      -22°F +135°C  +275°F	Not recommanded for Nitric acid - Steam Ketones	-
Viton (FPM)	Fluor carbon polymer	Mineral acids Oils Hydrocarbons	-20°C        -4°F +135°C     +275°F	Not recommanded for Steam - Freon 22 Kei Esters Solvents - Alkalis	-
Teflon (PTFE	Polytetrafluoro Ethylene	Solvents Corrosive Products	-40°C -40°F +180°C +356°F	Not recommanded for fluid containing powders. Alkaline metals (sodium, potassium) Gaseous Fluorine	Normal for ball valve