... +120°C NBR(X5)Fresh water,Salt, Strong base,Natural gas, Oil. Oil resistant-20°C~+100°CShort time +110°C Viton(X7 ... )Fresh water, Sea water, Salt,Weak base,Weak acid,Natural gas, Oil,Food. High performance resistant, corrosion resistant-20°C~+200°CShort ... PTFEFresh water, Sea water, Salt,Weak base,Weak acid,Natural gas, Oil,Food. High performance resistant, corrosion resistant -10°C~+200°C ...