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