0004470869 - Molykote 111 Compound Silicone Valve Lubricant & Sealant 5.3oz

Technical Overview: Molykote 111 Compound

Molykote 111 Compound is a high-performance, one-component, silicone oil-based grease thickened with an inorganic filler. Engineered for critical industrial applications, this compound serves a dual purpose as both a lubricant and a sealant. Its formulation is designed to resist oxidation and thermal degradation, maintaining its consistency over a wide service temperature range of -40°C to 200°C (-40°F to 392°F). Unlike standard organic greases, Molykote 111 does not have a drop point, meaning it will not melt or run out of the lubrication zone even under elevated temperatures, ensuring long-term reliability in static and dynamic sealing applications.

One of the defining characteristics of Molykote 111 is its exceptional resistance to water and chemicals. It exhibits very low water washout, making it an ideal choice for applications exposed to moisture, steam, or underwater environments. Furthermore, it is resistant to dilute acids, alkalis, and most mineral oils, although it is not recommended for use with liquid oxygen. The compound is chemically inert and compatible with a vast array of materials, including most ceramics, metals, plastics, and elastomers. However, compatibility testing is recommended for silicone rubber O-rings to prevent potential swelling.

Regulatory compliance is a key strength of this product. Molykote 111 meets several global standards for safety and performance. It is certified under NSF Standard 51 for use in food processing equipment and NSF Standard 61 for use in potable water systems. Additionally, it complies with FDA 21 CFR 175.300 regarding resinous and polymeric coatings. These certifications make it a versatile solution for industries ranging from water treatment and food processing to chemical manufacturing and laboratory instrumentation.

The 5.3 oz (150 g) tube provides a convenient form factor for precise application in maintenance and assembly operations. Whether used for lubricating control and pressure plug valves, sealing vacuum and pressure systems, or protecting electrical components as a dielectric barrier, Molykote 111 delivers consistent, high-quality performance that engineering professionals trust.