Import environmentally friendly O-ring Taiwan's imports o-ring seal failure types: 1. Material selection is incorrect, does not match the materials and working media; 2.o-ring partially "cold" to seal the gap breakage; 3. Seal structure, type of unreasonable; 4. improperly designed groove dimensions, namely the compression ratio, the amount of stretching beyond the range; 5. groove machining accuracy, surface roughness does not meet the requirements. Black VITON75 Viton O-ring Temperature range: static sealing: low temperature -26 ℃, 275 ℃ high temperature dynamic seal: low temperature -15 ℃, high temperature 200 ℃ Taiwan Wall top (OTP) is a professional manufacturer of seals, The main products are: O type seal, star-ring, ED seals, washers, rubber ball, seal, polyurethane seal, rubber parts ......