Molykote 55 O-ring grease is phenyl-methyl silicone-based grease designed to both lubricate and seal. Its formula works by effectively swelling rubber O-rings and seals by a small amount to ensure a tighter seal. Heat stable and oxidation resistant it can operate under a wide temperature range (-65 to +175C) making it ideal for a wide range of applications. Features and Benefits Lubricates and seals O-rings Formula marginally swells O-rings for a more effective seal Excellent oxidation resistance Good corrosion protection Wide service temperature range -65C to +175C (-85F to +347F) Compatible with many plastics and elastomers Available in 100g and 1kg containers Typical Applications Rubber and plastic components Metal Pneumatic systems Aerospace Automotive