rubber seal It has a wide range of specification with high quality and competitive price rubber sealOur company professionally manufactures rubber belt, rubber hose,rubber ring and rubber seal in Tianjin, China.1.The hardness:70Shore A2.the standard:AS568, BS1516, C92,P.G. and R standard.3.The material:NBR, SI, VITON, EPDM, CR, PTFE, PU and ACR. rubber seal