... , IIR, BR etc Specification:all kinds of rubber ItemOEM high peformance rubber components DescriptionWidely used in bathroom product, valve, faucet, machine, ... blue or follow the color codeAdvantageGood Ozone resistance, aging resistance, high/low temperature resistance, acid/alkali resistance, weather resistance, abrasion ... free to contact with me at any time. OEM high peformance rubber components