... silicone o -ring gsaket DescriptionWidely used in bathroom product, valve, faucet, machine, hydraumatic, pneumatic and automobiles.Hardness: Shore ... ,Natural rubber,EPDM.2) All manufacturing processes confirm to the ISO9001,SGS,ROHS,FDA.3) Customer's ... ) High and low temperature resistance, oil resistance, anti-ozone and aging, wearing Various sizes & colors as following: high quality automotive ...