Molykote® 111 Valve Lubricant Compound, O-Ring & Valve Sealant

Molykote 111 Valve Lubricant Compound – High-Performance O-Ring and Valve Sealant

Molykote® 111 Valve Lubricant Compound is a trusted, silicone-based lubricant and sealant designed for valves, O-rings, and systems exposed to water, harsh environments, and extreme temperatures. Previously known as Dow Corning 111, this product provides excellent water resistance, chemical stability, and compatibility with rubber, plastics, and metals.

Key Features and Benefits

• Superior Water Resistance: Effectively seals and protects against water and washout in harsh conditions.
• Wide Temperature Range: Performs reliably in temperatures from -40°F to +392°F (-40°C to +200°C).
• Chemical and Oxidation Resistance: Maintains stability in vacuum, pressure, and chemically exposed systems.
• Plastic and Rubber Compatibility: Safe for use on O-rings, gaskets, and seals without causing damage or swelling.
• Certified Performance: Meets NSF 51, NSF 61, FDA 21 CFR 175.300, and global water-contact standards.
• Durable Adhesion: Provides high tack for reliable performance on valves and gaskets.

Detailed Product Description

Molykote® 111 Valve Lubricant Compound, formerly Dow Corning 111, is a versatile and high-performance silicone lubricant and sealant. It is specifically formulated for critical applications, including control and pressure plug valves, vacuum and pressure systems, water softener and faucet valves, and outdoor equipment exposed to extreme environments. With exceptional water resistance and a wide operating temperature range of -40°F to +392°F (-40°C to +200°C), it ensures long-lasting performance across various industrial, marine, and commercial applications.

Engineered for compatibility with many plastics, elastomers, and metals, Molykote® 111 prevents rubber O-rings and gaskets from sticking to metal surfaces, reducing wear and tear while maintaining an effective seal. Its low volatility and low vapor pressure make it suitable for use in vacuum systems, damping mediums, and electrical equipment. This product also resists weathering, oxidation, and chemical exposure, ensuring reliability in the harshest operating environments.

Product Applications

• Lubricant for control and pressure plug valves
• Sealant for vacuum and pressure systems
• Protection for O-rings, gaskets, and seals
• Anti-stick coating for transformer gaskets and enclosures
• Damping medium for electrical and electronic dash pots
• Water softener and faucet valve lubrication
• Outdoor and marine equipment exposed to environmental washout

Product Specifications

• Technology: Silicone-based
• NLGI Grade: 3-4
• Color: Translucent White
• Operating Temperature: -40°F to +392°F (-40°C to +200°C)
• Thickener: Silica
• Sizes Available:
  • 6 g pillow pack (100 per carton)
    • Part Numbers: 4100422 / L1116GR
      
  • 100 g / 3.5 oz tube (10 per carton)
    • Part Numbers: 12122063 / L111100G 
  • 150 g / 5 oz tube (12 per carton) (Discontinued)
    
    • Part Numbers:  4109788 / L11150
  • 400 g / 14 oz cartridge (10 per carton)
    • Part Numbers: 4109803 / L111140
  • 3.6 kg / 8 lb pail
    • Part Numbers: 4111557 / L1118LB
  • 18 kg / 40 lb pail
    • Part Numbers: 4109896 / L11140LB

• Certifications: NSF 51, NSF 61, FDA 21 CFR 175.300, WRAS (BS9260), and more

Why Choose Molykote 111?

Molykote® 111 Valve Lubricant Compound is trusted across industries for its consistent performance, versatility, and durability. It meets global food and water contact standards, making it ideal for potable water systems, industrial equipment, and critical sealing applications. Its proven formulation ensures smooth operation, protects components from environmental exposure, and minimizes maintenance costs.

Learn more about the transition from Dow Corning to Molykote® in our blog post here.

Order Now to experience the proven performance of Molykote® 111 Valve Lubricant Compound for your lubrication and sealing needs.