Krytox XHT-S Grease | High Temp Standard Grease
Low oil evaporation for extending life of parts
Krytox™ XHT-S grease is a special high temperature grease with low oil evaporation that provide long bearing life and are compatible with most elastomers and plastics. These greases provide excellent lubrication over a broad temperature range, but are designed to work best at temperatures over 200 °C (400 °F). Krytox XHT-S series greases are nonflammable, oxygen compatible, chemically inert, and provide extended lubrication intervals and longer equipment life.
The Krytox™ XHT-S series greases are an extension of the Krytox GPL 240 series and Krytox GPL 20X series, but are designed to give higher performance in the 204–302 °C (400–575 °F) range. Krytox™ XHT-S series greases should be used below 320 °C (608 °F), where the polytetrafluoroethylene (PTFE) thickener could begin to melt. The base oil is an extremely viscous oil that provides good viscosity and lower evaporation at high temperatures. Krytox XHT-S series greases contain no additives, so they are used when a potential for interaction between process chemicals and grease additives exists. Krytox grease is made to a standard NLGI grade 2. PTFE is the standard thickener. For additional Krytox lubrication series info, please see Krytox GPL 22X series or Krytox GPL 20X series.
Krytox XHT-S compatibility with metals
Due to their low surface tensions, Krytox oils easily wet metallic surfaces; and, because of their inertness, Krytox oils have little or no adverse effect on metals. Testing of metals at 340 °C (644 °F) in the absence of air has shown little evidence of corrosion. In the presence of air, corrosion was slightly higher. The presence of molybdenum in the metals improved corrosion resistance. Because of its thermal stability and non-oxidizing characteristics, Krytox is a natural high-temperature lubricant. Krytox XHT greases are available with useful temperature ranges up to 360 °C (680 °F) for continuous use, with spikes to 400 °C (752 °F), when used in proper metallurgy with periodic re-lubrication.
Miller-Stephenson: Lubrication Experts, Superior Chemistry, Fast Delivery – a potent combination
At Miller-Stephenson, we understand the challenges engineers and scientists face with trying to select the best lubricant for current or new applications. With over 60 years of real-world experience, our highly trained team of technical experts and field engineers can assist you with identifying and selecting the optimal lubricant that best fits your operational parameter. Our large inventory of high-performance PFPE-base Krytox™ lubricants from Chemours, ensures we have the right lubricant for your needs, regardless of temperature, environment, safety, or performance of your system demands. For further information please review the articles below or contact a Miller-Stephenson representative.
Krytox™ is a trademark of The Chemours Company FC, LLC.
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The recommendation made here with and the information set forth with respect to the performance or use of our products are believed, but not warranted to be accurate. The products discussed are sold without warranty, as to fitness or performance, express or implied and upon condition that purchasers shall make their own test to determine suitability of such products for their particular purposes. Likewise, statements concerning the possible uses of our products are not intended as recommendations to use our products in the infringement of any patent.