... 85°C Hypalon(X2)Fresh water,Sea water,Salt, Strong base,Weak base,Weak acid,Alcohol. Oxidation resistant-20°C~+85°CShort time +140 ... +120°C Neoprene(X4)Fresh water,Sea water,Salt, Strong base,Weak base,Weak acid Light-proof,Aging resistant -25°C~+110°CShort time ... 200°CShort time +250°C PTFEFresh water, Sea water, Salt,Weak base,Weak acid,Natural gas, Oil,Food. High performance resistant, corrosion ...