... -------------------------------------------------------------------------------------------------------------------------- Rubber O Ring o-ring,rubber o-ring o-ring seal,silicon o-ring,silicon seal,viton o-ring,o-ring kit,nbr o-ringFeatures:1. Rubber O-rings are ... O RingDescriptionWidely used in bathroom product, valve, faucet, machine, hydraumatic, pneumatic and automobiles.Hardness: 45-90+/-5 ...