... mm 3.RoHS;ISO9001 certification 4.100%silicone 5.High quality reasonable price Products feature1, ... made of 100% silicone material 2,nontoxic, odorless, non-corrosive ,antioxidative3 ... and a long service life. Product attributesNamesilicone rubber sealFull specifications20,25,32,47,58,70mmProduct ... bilateral according to your requirements silicone rubber seal