silicone o rings 1) Quick supply 2) Stringent quality checks 3) Reasonable-price ... at home and abroad.Our main products lines include O-Rings, packing, rubber cord, rubber hose and various other products made ... , NBR, CR, CSM, SI, SIL, FLS, FPM, FFPM, ACM, PU, VITON, etc.our products are well recognized both domestically and abroad ... .we will do our best to satify you. silicone o rings OD 65mm*4mm