Rbber o rings, Auto parts, Mchanical seals, Seals Different colors Different sizes Silicone- with ROHS Custom Rbber o rings, Auto parts, Mchanical seals, Seals1) High quality silicone rubber guaranteed;2) Design and produce according to our customers;3) Good function of sealing and attenuating shock;4) Widely used in automobile, electrical appliances and other industry;