How to seal O-rings?

Molykote® 111 Compound lubricates and seals O-rings.

Molykote® 111 compound is registered for food (FDA / ACS / NSF 51 / NSF 61) and certified by WRAS.

Applications :

  • Molykote™ 111 is silicone compoud for valve lubricant and sealant
  • Lubrication for control and pressure plug valves, water softener and faucet valves
  • Sealant for outdoor equipment subject to washing and harsh environmental exposure: meters, electrical service entrance and underground connections
  • Chemical barrier coating / Rubber and plastic Orings, gaskets and seals.

Main characteristics of Molykote® 111 Compound :

  • Good resistance to most chemicals
  • Large operating temperature range (-40°C/-40°F to 200°C/392°F)
  • Low vapour pressure
  • Low volatility
  • Excellent water resistance

Lubrication and sealing of control valves :

Starting the valve Leakage formation as a result of premature wear and tear leading to sealing failure. Leak Removal of the valve Application of Molykote®111 compound by brush on pre-cleaned seals and valve body. Tightness of the valve, no more leaks, restarting the valve.

How it works :

Molykote® 111 Compound can be applied by hand, by specially designed automatic equipment, by brush or with a cloth. Some types of grease pumps may block; test first. A thinner consistency can be obtained by dispersion in solvents such as xylene, mineral spirits and methyl ethyl ketone.

Molykote® 111 Compound can then be applied by brush, dipping or spraying. Molykote® 111 Compound should not be applied to any surface that is to be painted or finished later. These coatings may not adhere to a silicone treated surface.

In the event of contamination by a silicone coating, it is necessary to scrub or wash the parts with a solvent, wash them with a detergent or immerse them in an alcoholic caustic potash solution and then rinse them with clear water before painting.

More informations :

Need information on MOLYKOTE® lubricants ? Contact our technical department on +33 426 680 680 or fill in our contact form.

You can also download our selection guide dedicated to industrial lubrication and maintenance: 

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