... 3, Material: silicone 4, OEM & ODM warmly welcomed Soft silicone tube FDA grade 1) High and low temperature resistance,2) Abrasion ... ,3) O zone resistance Silicone Rubber O Ring:1) Material: SILICON, NBR, SBR, NR, EPDM, IIR, EP, CR etc2) Waterproof and ... , motorcycle products, etc.5) Manufactured according to customers' requirements Soft silicon tube FDA grade