MOLYKOTE 55 O-Ring Grease is NLGI Grade 2 silicone base grease with a lithium thickener offering compatibility with many plastics and elastomers and commonly used for o-rings.

author: Hellen

2025-08-29

MOLYKOTE® 55 O-Ring Grease: Silicone-Based Solution Delivering Reliable Lubrication, Sealing, and Long-Term Stability

MOLYKOTE® 55 O-ring grease is the industry standard lubricant solution for long term seal & protection on elastomer & rubber O-rings. MOLYKOTE® 55 O-ring grease helps promote successful sealing by slightly swelling natural rubber, reducing the likelihood of leakage or O-ring failure. MOLYKOTE® 55 O-ring Grease is both heat stable and oxidation resistant, ideal for extended lubrication & protection for a variety of O-rings in industrial, aircraft or automotive applications.

MOLYKOTE® 55 O-ring is a silicone and ester based solution with a lithium soap thickener for precision seal performance & corrosion protection for metal components.

I.Features

Excellent oxidation resistance
Good corrosion protection
Wide service-temperature range: -65 to 175°C (-85 to 347°F)
Compatible with many plastics and elastomers
No intentional polytetrafluoroethylene (PTFE) or per- and polyfluoroalkyl substances (PFAS)

II.Composition

Silicone oil
Ester
Lithium soap

III.Applications

Lubrication between rubber and metal parts in pneumatic systems in aircraft, automotive and general industrial applications.

IV.DESCRIPTION

MOLYKOTE® 55 O-Ring Grease is a silicone-based material that helps ensure positive lubrication and sealing by slightly swelling rubber O-rings and seals. This product is heat-stable and oxidation-resistant and is serviceable from approximately -65 to 175°C (-85 to 347°F).

V.How to use

MOLYKOTE® 55 O-Ring Grease should be applied using brush, grease gun, or automatic lubrication system. MOLYKOTE® 55 ORing Grease can be used in centralized lubrication systems. Do not mix with other greases.

MOLYKOTE® 55 O-Ring Grease has been shown to swell natural rubber. However, compatibility of the lubricant may vary with the plasticizer content of specific materials (especially elastomers). Small-scale compatibility testing should be conducted prior to the use of this product in any application.

Some information comes from the internet, if there is infringement, please contact us at 13580828702.

Molykote® G-4700 Extreme Pressure Synthetic Grease

MOLYKOTE 33 Light Grease for use under a wide range of temperature conditions for light-load applications where there is metal-to-metal or metal-to-plastic friction at low to high speeds

MOLYKOTE® Z Powder is a high-purity molybdenum disulfide (MoS₂) solid lubricant designed for demanding lubrication conditions where conventional oils or greases may not be suitable. It helps reduce friction and wear under heavy loads, slow speeds, high temperatures and other severe operating conditions.

MOLYKOTE® Z Powder – MoS₂ Solid Lubricant for Extreme Applications

2026-09-19

MOLYKOTE® 112 High Performance Lube/Sealant is a high-consistency silicone-based lubricant and sealing compound designed for valves, O-rings, bearings and sealing components exposed to demanding temperatures, moisture and chemicals. Its NLGI Grade 3 consistency provides strong mechanical stability while maintaining lubrication and sealing performance over a wide temperature range.

MOLYKOTE 112 High Performance Lube/Sealant

2026-09-12

MOLYKOTE HP-300 Grease is a high-performance PFPE-based lubricant developed for demanding industrial applications where conventional greases may not provide sufficient chemical stability, temperature resistance, or low-volatility performance. With PTFE thickening technology, it is suitable for bearings, seals, valves, plastics, elastomers, cleanroom equipment, and other components operating in harsh environments.

MOLYKOTE HP-300 Grease: PFPE Lubrication for Extreme Conditions

2026-08-29

MOLYKOTE® Longterm 2 Plus is a lithium-thickened, mineral oil-based extreme pressure grease developed for heavily loaded metal-to-metal applications. With solid lubricants, EP additives and corrosion protection, it provides reliable wear protection, adhesion and long-term lubrication for bearings, splines, clutches and other industrial components.

MOLYKOTE Longterm 2 Plus Extreme Pressure Bearing Grease

2026-08-22