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Krytox XHT AC grease
Krytox XHT AC grease

Krytox™ XHT-AC Grease

Krytox™ XHT-AC grease has an Oil Viscosity of 500 cSt at 40°C and the estimated useful temperature range is 250 to 320°C.

Krytox Authorized Distributor

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Krytox™ XHT-AC Grease | High Temperature Grease

Anti-Corrosion Additive for extreme corrosion protection

Krytox™ XHT AC grease is a special high temperature grease with low oil evaporation that provide anti-wear and rusting protection, and is compatible with all elastomers and plastics. These greases have excellent lubrication over a broad temperature range, but are designed to work best at temperatures over 200 °C (400°F). Krytox XHT AC grease is nonflammable, oxygen-compatible, and chemically inert. Krytox greases provide extended lubrication intervals and longer equipment life.

The Krytox XHT AC greases are an extension of the Krytox 240 series and Krytox GPL 22X series, but are designed to give higher performance in the 204–302°C (400–575 °F) range. Krytox™ XHT-AC greases contain sodium nitrite to offer anti-corrosion performance. These 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 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 240 series.

Krytox XHT-AC compatibility with metals

Because of their low surface tensions, Krytox lubricants easily wet metallic surfaces. Krytox lubricants are chemically inert and, therefore, have no adverse effect on metals when the temperature is below 288 °C (550 °F). Above 288 °C (550 °F), many alloy steels, stainless steels, and other metals, such as aluminum alloy, titanium alloy, nickel alloy, and cobalt alloy, can be used with Krytox.

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.

For more benefits and related articles:

Prepping a bearing for Krytox is a simple process. Click here to get a step by step guide on how to prep a bearing with Krytox grease.

To learn more about Krytox NSF H-1 Rated Food Grade Lubricants click here.

To learn more about Krytox Automotive Solutions click here.

To learn more about Krytox Automotive Noise, Harshness and Vibration solutions click here. 

For the Krytox Frequently asked questions (FAQ) click here.

With help regarding which Krytox grease is right for you, click here.

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.

XHT-AC XHT-ACX
Estimated Temperature Range
°C (-20-300) (-10-300)
°F (-4-572) (14-572)
Base Oil Viscosity, cSt
20°C 1712 2610
40°C 500 738
100°C 47 65
Food Contact Approval NSF H-1 NSF H-1

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.

XHT PDF

Data Sheet

Download File
  • Bearings
  • Paint plant conveyor bearings
  • Corrugator and paper machine bearings
  • Aluminum can manufacturing bearings
  • Welding machines
  • High temperature fans
  • Textile equipment
  • Tenter frames
  • High temperature ovens
  • Conveyor systems in glass and aluminum plants
  • Textile calender roll bearings
  • Brick kiln car bearings
  • Valve lubrication
  • Ventilation fan bearing grease
  • Rod mills

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.

Syringe

 Tube Jar Cartridge

Pail

0.5 oz.

 2 oz. 0.5 kg 0.8 kg

5 kg

1 oz.

 4 oz. 1 kg 7 kg

2 oz.

 8 oz.

20 kg

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.

  • NSF H-1
  • ASTM D1743

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.