Krytox 240AC Grease | High-Performance Aerospace & Aviation Grease
MIL-SPEC PRF-26717 Type 1,2, & 3, NSF H-1 rated
Krytox 240AC grease is based on perfluoropolyether (PFPE) oils. These synthetic fluorinated lubricants are used in extreme conditions such as continuous high temperatures up to 300 °C (572 °F) and higher temperatures for shorter periods, depending on product grade limits. Chemically inert and safe for use around hazardous chemicals, these lubricants are nonflammable and are safe for use in oxygen service. Krytox oils and greases are silicone-free and do not damage plastics or elastomers or cause corrosion to metals. They are commonly used as lubricants in aerospace, automotive, industrial, and semiconductor applications as well as solving many other routine lubrication problems.
Krytox greases are the original products that this military specification was written for and have been certified continuously since the specification was originally written. This is the latest data from the re-certification that is required every five years. Krytox greases are standard as NLGI Grade 2 penetration. If the 240 AZ is ordered to meet MIL-SPEC requirements, it must be ordered as NLGI Grade 1 to meet the specification.
Krytox 240AC – Superior Performance, Temperature Stability, and Reduction in Wear
In the aerospace industry, Krytox 240AC grease is applied on various settings spanning from bearings and sealants to o-rings and oxygen systems. Krytox is a valuable asset to the aerospace industry due to its superior performance in a wide range of temperatures scaling from 70 to 399ºC (–100 to 750 ºF). In addition, it is robust in harsh environments and has excellent frictional properties, allowing it to resist change in properties over time, provide longer wear, and lower energy consumption. Krytox lubricants are compatible with all metals, elastomers, plastics, paints, and finishes. Due to the intense and severe circumstances of the aerospace industry, it can be expected that Krytox delivers a high level of product excellence. For Krytox Aviation Oils, please see Krytox™ 143 series.
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:
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.
For a general Krytox application overview, 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.
| Aerospace Grade | 240AZ | 240AA | 240AB | 240AC | 240AD |
| Viscosity @ 20°C | 60 | 88 | 240 | 800 | 1540 |
| Viscosity @ 38°C | 24.7 | 35 | 86 | 270 | 502 |
| Viscosity @ 99°C | 4.2 | 5.4 | 10.5 | 26 | 44 |
| Temperature Range °C | (-57-149) | (-51-177) | (-40-232) | (-34-288) | (-29-316) |
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.
Aerospace PDF
- Bearings
- Seals
- Valves
- Oxygen Devices
- O-Rings
- Threads
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. | – | 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.
- MIL PRF-27617
- NSF H-1 Rated
- ASTM D445
- ASTM D2595
- ASTM D97
- ASTM D217
- ASTM D942
- ASTM D2512
- ASTM D6184
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.