... . Oxidation resistant-20°C~+85°CShort time +140°C EPDM(X3)Fresh water, Sea water,Salt,Steam. Aging resistant-25°C~+110°CShort time +120 ... °C Neoprene(X4)Fresh water,Sea water,Salt, Strong base ... ,Weak base,Weak acid Light-proof,Aging resistant -25°C~+110°CShort time +120°C NBR(X5)Fresh water,Salt, Strong base,Natural ...