... Hypalon(X2)Fresh water,Sea water,Salt, Strong base,Weak base,Weak acid,Alcohol. Oxidation resistant-20°C~+85°CShort time + ... +110°C Viton(X7)Fresh water, Sea water, Salt,Weak base,Weak acid,Natural gas, Oil,Food. High performance resistant, corrosion resistant ... CShort time +250°C PTFEFresh water, Sea water, Salt,Weak base,Weak acid,Natural gas, Oil,Food. High performance resistant, corrosion resistant ...