Sealing Grease Waterproof and leakage proof. Used for lubricating rubber, plastic parts, piston, valve. IntroductionDarbond Sealing Grease 2772 ... properties--Waterproof and leakage proof.--Used as sealing and lubricating--Used for rubber, plastic parts, piston, valve lubricating. Typical ... for lubricating and sealing power switch, O-ring, automobile brake pump, valve in petrochemical plants etc.Also ...