Dow Corning Molykote 111 Compound Vaccuum & Pressure Valve Grease

In stock
SKU: DC_MOLYKOTE_111_150g_4109788
Regular price $ 29.99 USD
121 units available
121 units are available

Dow Corning Molykote 111 Compound Vaccuum & Pressure Valve Grease Tube 150g (5.3oz) is a silicone grease that is ideal for control and pressure plug valves and for acting as a sealant for vacuum and pressure valves. It offers excellent water resistance and meets several global standards for water content.


  • Wide service temperature range (-40C/-40F to 200C/392F)
  • Excellent water resistance & chemical resistance
  • Compatible with many plastics and elastomers
  • Low vapor pressure
  • Low volatility
  • Silicone Oil based with inorganic thickening agents
  • Long shelf life, 60-months from DOM
  • Meets several global standards for water contact
  • Conforms to FDA 175.300, NSF 51 and NSF 61

Popular Applications

  • Lubrication for control and pressure plug valves, water softener and faucet valves.
  • Sealant for vacuum and pressure systems.
  • Sealant for outdoor equipment (also shipboard) subject to washing and harsh environmental exposure: meters, electrical service entrance and underground connections.
  • Damping medium for dash pots in electrical and electronic equipment.
  • Used as an anti-stick and a sealant for transformer gasket and equipment enclosures. It prevents gaskets from sticking to metal and resists weathering and water washout.
  • Rubber and plastic O-rings, gaskets and seals.

Application Instructions:

  • Molykote 111 Lubricant can be applied by hand, specially designed automated equipment, brushing or wiping. Certain designs of grease guns may seize up; test prior to use.
  • A thinner consistency can be achieved by dispersing in solvents such as xylene, mineral spirits and Methyl Ethyl Ketone (2-Butanone). Dow 111 Silicone Lubricant can then be applied by brushing, dipping or spraying.
  • Dow 111 Lubricant should not be applied to any surface which will be painted or finished. Such coatings may not adhere to the silicone-treated surface. If contaminated by a silicone coating, parts can be wiped or washed with solvent, washed with detergent, or immersed in an alcoholic potassium hydroxide solution and then rinsed in clear water before painting.

This silicone grease is very prevalent as a general use lubricate and is low cost in relation to many of the alternatives. 111 Compound is commonly used for lubricating and preserving rubber parts as well as to grease artificial and silicone rubber used in a high-temperature application.