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MOLYKOTE® 55 O-Ring Grease

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MOLYKOTE® 55 O-Ring Grease is an NLGI Grade 2, silicone-based grease with a lithium thickener and a base oil viscosity of 76 cSt at 40°C.

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Product Overview

MOLYKOTE® 55 O-Ring Grease is the industry standard for lubricating metal-on-elastomer interfaces and sealing rubber O-rings and connectors.  It is formulated from a high-quality silicone base oil with added synthetic ester and a lithium soap thickener.

MOLYKOTE® 55 O-Ring Grease is engineered to slightly swell rubber O-rings and seals for a more thorough sealing performance. It is also incredibly heat stable and resists oxidation between −65°C and 175°C. Learn more about the MOLYKOTE® 55 O-Ring Grease in our Maintenance Minute video series below.

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Applications

MOLYKOTE® 55 O-Ring Grease exhibits excellent lubrication and protection in a range of industrial applications, including but not limited to the following:

Rubber and metal surface interaction
Pneumatic systems and seals in aircraft
O-Ring fasteners, fittings, and seals
Industrial and automotive seals

Features & Benefits

Excellent resistance to oxidation
Gentle swelling in O-rings for greater sealing efficiency
Robust thermal stability (−65°C to 175°C)
Good corrosion prevention
Excellent plastic and elastomer compatibility

Problems Solved

Leaking, cracking, or failing seals
Poor thermal stability in sealing fluids and greases
Inadequate corrosion or rust prevention

Product Specifications

Product Type: Silicone Grease
Base oil viscosity @ 40°C: 76 cSt
Base oil viscosity @ 25°C: 100 cSt
NLGI Grade: 2
Thickener: Lithium
Low temperature: −65°C (−85°F)
High temperature: 177°C (347°F)
Color: Off-white

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