MOLYKOTE® 55 O-Ring Grease - Silicone-Based Grease for Seals and O-Rings

MOLYKOTE® 55 O-Ring Grease

High-performance silicone-based grease designed to lubricate and seal rubber-to-metal and rubber-to-plastic components in pneumatic systems. Provides excellent oxidation resistance and wide temperature range compatibility.

Key Features and Benefits

• Wide Temperature Range: Operates reliably from -65°C to 175°C (-85°F to 347°F), making it ideal for extreme environments.
• Enhanced Sealing: Slightly swells rubber O-rings and seals for better sealing performance.
• Excellent Oxidation Resistance: Prevents degradation under heat and long-term use.
• Plastic and Elastomer Compatibility: Safe for use with most plastics and rubber components.
• Corrosion Protection: Guards against oxidation and environmental wear to extend component life.

Detailed Product Description

MOLYKOTE® 55 O-Ring Grease is a silicone-based, lithium-thickened grease specifically formulated for lubrication and sealing between rubber and metal or plastic components in pneumatic systems. With a base oil viscosity of 76 cSt at 40°C and no solid lubricants, it ensures smooth operation and reliable sealing in various industrial, automotive, and aerospace applications.

This grease is engineered to slightly swell rubber O-rings and seals, creating a tighter seal and improving performance in high-demand systems. It operates over a broad temperature range, providing reliable lubrication in extreme cold and heat, making it ideal for both high and low-temperature applications.

Learn more about the MOLYKOTE® brand and its transition from Dow Corning to DuPont in our detailed blog post.

Applications

• Rubber-to-metal lubrication in pneumatic systems for aircraft, automotive, and industrial applications.
• Sealing and lubricating O-rings, seals, and valves.
• Suitable for use in systems requiring corrosion protection and oxidation resistance.

Technical Specifications

• Product Type: MOLYKOTE® Grease
• Technology: Silicone-based
• Base Oil Viscosity @ 40°C: 76 cSt
• NLGI Grade: 2
• Thickener: Lithium
• Solid Lubricants: None
• Operating Temperature: -65°C to 175°C (-85°F to 347°F)
• Color: Off White

Available Sizes and Part Numbers

• 6g Pillow Pack: 1000 per carton (PN: 4103846)
• 100g / 3.5oz Tube: 10 per carton
• 1kg Can: 10 per carton
• 3.6kg / 8lb Pail: 4 per carton (PN: 4016068)
• 18kg / 40lb Pail: (PN: 4016076)
• 180kg Drum: (PN: 4016067)

Why Choose MOLYKOTE® 55 O-Ring Grease?

• Proven performance in high-demand pneumatic and sealing applications.
• Wide temperature range makes it suitable for extreme environments.
• Trusted legacy of Dow Corning, now part of DuPont.