Molykote® 111 Compound is a heavy-consistency, silicone‑oil-based NLGI Grade 3–4 lubricant and sealant ideal for valves, O‑rings, and gaskets in demanding temperature and water‑contact applications.
When valves become difficult to operate, seals are damaged during assembly, or water exposure transforms routine maintenance into persistent rework, the issue often lies not with the component itself but with the interface. MOLYKOTE® 111 Compound is engineered to address sealing and lubrication challenges at these interfaces, particularly where water contact, temperature fluctuations, and prolonged use degrade ordinary greases and sealants. Its durable formulation provides assurance that equipment functions smoothly and efficiently without frequent disruptions.
This silicone compound features a heavy consistency, designed for enduring sealing and lubrication amidst pressure and temperature variations. It is crafted to prevent water intrusion, resist deterioration in both hot and cold water, and maintain integrity across diverse chemical environments.
Additionally, it is compatible with various elastomers and plastics, making it a practical choice for maintenance teams managing multiple valve types and seal materials. Its adaptability extends to numerous industrial applications, enhancing operational reliability.
Key selection proof points
Some users may be familiar with MOLYKOTE® 111 by its former names, Dow Corning 111 or Dow Corning MOLYKOTE 111, as Dow Corning was previously the manufacturer. While the branding has changed, the product continues to offer the same trusted performance. Potential offsets might include other silicone-based greases or sealants, but MOLYKOTE® 111 remains a preferred choice due to its proven track record in demanding environments.
If you are deciding between an O-ring lubricant, a valve lubricant, and a sealant for a water-contact application, send us the valve type, seal material (if known), temperature range, and whether exposure is intermittent or continuous. We will confirm the best-fit MOLYKOTE® grade and packaging for your maintenance process.
Product type: Compound lubricant
Chemistry: Silicone
NLGI Grade: 3–4
Thickener: Silica
High temp: 204°C
Low temp: −40°C
Color: Translucent white
Hazmat: No
Resolved water ingress and washout issues that previously led to leaks and compromised sealing, improving system safety and reducing repair costs.
Eliminated valve sticking and damage like tearing and scoring by stabilizing lubrication under extreme conditions, enhancing performance and minimizing downtime.
Prevented seal damage during assembly by improving elastomer handling, reducing the need for frequent replacements and lowering maintenance expenses
Addressed compounds hardening over time in static sealing interfaces, simplifying maintenance and removing the necessity for specialized tools or skills.
Improved resistance to degradation in varying environments such as hot and cold water and chemicals, preventing unexpected failures and reducing the need for more robust materials.
Control and pressure plug valves, essential for regulating fluid flow in various industrial applications, ensuring efficient system operation and safety.
Water softener and faucet valves, crucial for enhancing water quality and protecting plumbing systems from mineral buildup, thus extending their lifespan.
O-rings and gaskets in food and beverage, municipal water, and chemical-processing equipment, providing reliable sealing solutions to prevent leaks and contamination.
Sealing interfaces in vacuum and pressure systems, and outdoor or shipboard equipment subject to washing and harsh exposure, ensuring durability and consistent performance under extreme conditions.
Damping dashpots in electronics and electrical insulated components, crucial for managing vibrations and enhancing the longevity of sensitive devices.
Rubber and plastic seal lubrication during assembly to reduce tearing, facilitating smoother installation processes and maintaining the integrity of the components involved.
Hydraulic and pneumatic systems, benefiting from advanced sealing technologies, which enhance performance, reliability, and operational efficiency.
Proper lubrication within the pulp & paper industry is critical. With extreme temperatures, harsh chemicals and near 24/7 production cycles the right lubricant can make or break a facility. The MOLYKOTE® portfolio of oils, greases and pastes help extend equipment life and increase reliability.
The Oil & Gas Industry truly powers all other industries. Therefore, it is critical that these facilities are kept operating at peak performance and protected with reliable and robust lubrication. Learn how MOLYKOTE® Oils, Greases, Compounds and Anti-Friction Coatings can be used to cover multiple applications.
Your document download will begin shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
Thank you for your inquiry and interest in ChemPoint.
We will respond to you shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
Thank you for your inquiry and interest in ChemPoint.
We will respond to you shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
The document currently is provided in the following languages from the supplier at this time.
The document currently is provided in the following languages from the supplier at this time.
We’ve detected that you are located in a different region than the region selected on the website. Would you like to change your region?
Current Region: English - Europe, Middle East, Africa
View Support Articles
Talk to an Expert
Ask a Question
