... 3.Best quality based on reasonable price Silicone Gasket:· Description: o Material: comply to RoHS, silicone or rubber (NR, SBR, BR, NBR ... , SBR, BR, NBR,CR, EPDM, IIR, FKM SIR etc, eco-friendly,no-toxic.SizeAs customizedUsageElectronic, automobile, medicl equipment toys and so ... , especially for some automotive rubber moldsRemarkOEM & ODM products welcomed Silicone O-Ring/Seal/Gasket ,eco-friendly