... 3.Best quality based on reasonable price Silicone Gasket:· Description: o Material: comply to RoHS, silicone or rubber (NR, SBR, BR, NBR,CR, ... can reach ±3 shore A toleranceo Color: for rubber, usually black, for silicone and EPDM, can be in any color as ... molds, can be in 30days, especially for some automotive rubber moldsRemarkOEM & ODM products welcomed Silicone O-Ring/Seal/Gasket ,eco-friendly