Krytox™ NRT 8904 Grease
Krytox™ NRT 8904 grease has an Oil Viscosity of 60 cSt at 40°C and the estimated useful temperature range is -51°C to 179°C.
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Krytox™ NRT 8904 Grease | For Reactive Gas Service
Superior film-forming capability that reduces wear
Krytox NRT 8904 grease delivers nonreactive, nonflammable, long-lasting performance, even under the demanding temperatures and pressures of reactive gas service. Krytox NRT lubricants are compatible with oxygen and other reactive chemicals, and are extremely resistant to water washout. Krytox NRT lubricants are also compatible with polymers used in seals, O-rings, and valves. Krytox NRT 8904 and NRT 8906 provide excellent lubrication options for valves, regulators, seals, and pump and motor bearings at a wide range of operating conditions. Krytox NRT 8904 grease has been formulated for use in cold to ambient conditions, and is recommended as a cost-effective valve packing and seal lubricant for O-rings.
All NRT oils and greases have been tested by West German Federal Institute for Materials Testing (BAM). Krytox lubricants have been independently tested by organizations, including BOC, Air Liquide, NASA, General Dynamics, and Praxair, and proven acceptable for oxygen and other reactive chemical compatibility. For additional Krytox lubrication series info, please see Krytox VPF/LVP or Krytox GPL 22X series.
Why Krytox NRT 8904?
Krytox™ products are fully synthetic, not petroleum- based and totally inert, so Krytox™ oils and greases do not react with anything in the environment. Unlike other lubricants, at temperatures under 350 ºC (662 °F), Krytox™ oil does not oxidize or break down into other substances that could be harmful.
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.
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.
| NRT 8900 | NRT 8904 | NRT 8906 | NRT 8908 | |
| Estimated Temperature Range | ||||
| °C | -51-121 | -51-179 | -36-260 | -40-180 |
| °F | -69-250 | -60-354 | -33-500 | -40-356 |
| NLGI Grade | 2 | 2 | 2 | 2 |
| Specific Gravity | 1.35 g/cc @ 75°F | 1.35 g/cc @ 75°F | 1.35 g/cc @ 75°F | 1.35 g/cc @ 75°F |
| ISO Viscosity | 19 | 60 | 240 | 46 |
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.
NRT TDS
Technical Data Sheet
- Valves
- Regulators
- Pumps
- Bearings
- Motor Bearings
- O-Rings
- Compressors
- Turbine Generators
- Automotive Components
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.
- BAM
- BOC
- Air Liquide
- NASA
- General Dynamics
- Praxair
- ASTM D445
- ASTM D972
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.