... and leakage proof. Used for lubricating rubber, plastic parts, piston, valve. IntroductionDarbond Sealing Grease 2772 is made of ... lubricating functions, with good chemical stability, good applicability for many materials, large temperature range, excellent thermostability, ... bromine, water, acid, alkali and other chemicals.Suitable for electric insulation, preventing flashover, damp, vibration, dust, ...