Rubber O Ring 1.ISO 9001 2.High quality, low price Rubber O Ring we supply EPDM rubber o ring, silicone rubber o ring, ACM rubber o ring, NBR rubber o ring, HNBR rubber o ring, FPM rubber o ring, CR rubber o ring, viton o ring, etc. Rubber o ring descriptions: 1. Materials: FPM, also HNBR, NBR, SI, EPDM, ACM,PU, SBR, CR, BR, IIR, NR, IR, etc, just as your request. 2. Hardness: between 30-90 shore ...