MOLYKOTE High Vacuum Grease 150g Silicone Vacuum Sealant

MOLYKOTE High Vacuum Grease Silicone Vacuum Sealant

MOLYKOTE High Vacuum Grease is a premium silicone-based lubricating and sealing compound specially formulated for vacuum and pressure systems operating under demanding industrial conditions. Featuring a stiff, nonmelting formulation with NLGI Grade 3-4 consistency, this high-quality silicone vacuum grease provides reliable sealing, lubrication and long-term protection for critical equipment components.

The product offers excellent resistance to water, chemicals, oxidation and extreme temperatures, making it suitable for harsh industrial and laboratory environments. Its low volatility characteristics help maintain sealing integrity in high vacuum applications while minimizing contamination risks.

This vacuum system grease effectively reduces wear in plastic-to-metal and rubber-to-metal contact areas while maintaining excellent compatibility with plastics, elastomers and synthetic rubber materials. The compound also provides strong adhesion and sealing performance, helping prevent leakage and extending component life.

MOLYKOTE High Vacuum Grease meets FDA 21 CFR 175.300 requirements, making it suitable for applications involving indirect food contact and sensitive industrial environments.

Product Features

• Excellent sealing performance for vacuum systems
• Low volatility for high vacuum applications
• Outstanding chemical resistance
• Excellent water resistance
• Wide operating temperature range
• Strong adhesion and anti-wear performance
• Compatible with plastics and elastomers
• Good oxidation resistance
• Nonmelting silicone formulation
• PFAS-free and no intentional PTFE content

Technical Specifications

• Product Name: MOLYKOTE High Vacuum Grease
• Product Type: Compound
• Technology: Silicone
• NLGI Grade: 3-4
• Thickener: Silica
• Operating Temperature Range: -40°C to +204°C
• Color: Translucent White

Typical Applications

This silicone vacuum sealant is widely used in:

• Vacuum and pressure systems
• Vacuum pumps
• Chemical processing equipment
• Plug valves and control valves
• Flow meter bearings
• Fire extinguisher valves
• Water treatment equipment
• O-rings and seals
• Synthetic rubber gaskets
• Optical equipment such as binoculars and telescopes

Advantages for Vacuum and Sealing Applications

MOLYKOTE High Vacuum Grease provides reliable sealing and lubrication performance in applications requiring resistance to vacuum, chemicals and temperature extremes. Its silicone vacuum grease formulation helps prevent leakage, reduce friction and extend the service life of seals and moving components.

The product is also suitable for delicate optical equipment lubrication, helping prevent lens fogging while maintaining smooth O-ring operation.