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GLEITMO SIL 455 (Formerly PST 455)

O-Ring Grease


GLEITMO SIL 455 O-Ring Grease is a silicone-based material that helps ensure positive lubrication and sealing by slightly swelling rubber O-rings and seals. GLEITMO SIL 455 is an excellent lubricant, preventing O-rings from drying, cracking and becoming brittle in harsh environments. This product is heat stable and oxidation resistant and is serviceable from a wide temperature range.

Performance Features

  • Compatible with many plastics and elastomers
  • High oxidation resistance
  • Wide service temperature range -65°C to +190°C (-85°F to +374°F)
  • Good corrosion protection
  • Meets requirements for Mil Spec 4343


  • Rubber and plastic O-rings (non-silicone)
  • Dynamic lubrication between rubber and metal parts in pneumatic systems in:
    • Aircraft
    • Automotive
    • General industrial applications


  • Other industries

The information shown on this side is based on the experience and expertise of the FUCHS Group in the development and manufacture of lubricants and represents the current state of the art. The performance of our products can be influenced by a series of factors, especially the specific use, the method of application, the operational environment, component pretreatment, possible external contamination, etc. For this reason, universally valid statements about the function of our products are not possible. Our products must not be used in aircraft/spacecraft or parts thereof. This does not apply if the products can be removed again before the components are fitted in an aircraft/spacecraft. The information given here represents general, non-binding guidelines. No warranty expressed or implied is given concerning the properties of the product or its suitability for any given application. We therefore recommend that you consult a FUCHS Group application engineer to discuss application conditions and the performance criteria of the products before the products are used. It is the responsibility of the user to test the functional suitability of the products and to use them with the corresponding care. Our products are subject to continuous further development. We therefore retain the right to change our product range, the products, and their manufacturing processes as well as all details on this side at any time and without warning, provided that no customer-specific agreements exist that require otherwise.

Contact us
(708) 333-8900
Service Contact
(708) 333-8900
Business hours:

Monday - Friday

8:30 am - 4:30 pm CST