... Delivery 4.OEM is ok rubber flat gasket Features:1. Main materialSilicone rubber, also can use Natural rubber, SBR, NBR, IIR, PU, EPDM ... in automobile, electrical appliances, building vibration isolation and other industry. For example, air blower, water pump, instrument, measuring of ships and ... me know the use).Hardness or duro.Tolerence.Color.Quantity rubber flat gasket/sealing