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Krytox™ NRT 8990 Grease

Krytox™ NRT 8990 is a linear PFPE grease providing low volatility characteristics for longer lubricant life. The base oil has a high viscosity index to provide effective lubrication over a wider temperature range, making it a great choice for LIQUID OXYGEN service. Krytox™ NRT 8990 is formulated using a patented soluble anti-corrosion additive that helps reduce noise, rusting, and wear, thus extending grease, bearing and component life.


0.8kg Cartridge



Product Overview

Krytox™ NRT greases and oils deliver nonreactive, non-flammable, 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.

End Markets: Chemical & Petrochemical; Energy Generation & Utility; Heavy Industry; Oil & Gas; Wood Products


Related Applications: Bearings; High Temp & Alloys; Pumps; Reactive Service; Slides, Guides, & Tracks; Valves, Packings, Seals & O-Rings

Features & Benefits

The superior film-forming capability of Krytox™  provides a thick oil layer that reduces friction and wear, extending equipment life in severe duty applications. The non oxidizing nature of the oils makes the greases last longer. The oils don’t gum up as they age, so they won’t harden the greases and cause catastrophic failures. 

Krytox™ NRT greases are thickened with a unique polytetrafluoroethylene (PTFE) with the formula (CF2-CF2)n. This special high efficiency thickener has a melting point of 325 °C (617 °F) and has low molecular weight and submicron (0.2 m) particle size.

Product Specifications

NLGI Grade:  1

Thickener: PTFE

Estimated Temperature Range: –75°C to +150°C

Oil Viscosity, kinematic cSt, ASTM D445, @40°C: 15

Oil Density, g/mL: 1.9
Primary Chemistry: PFPE
Chemistry: Perfluoropolyether (PFPE)
Functions: Grease

Related Products

Krytox™ Greases

Krytox™ greases are nontoxic lubricants that maintain their lubricity and viscosity properties to reduce maintenance costs associated with re-lubrication, component failure, and downtime in demanding applications. They are created by thickening synthetic perfluoropolyether-based oil (PFPE) with polytetrafluoroethylene (PTFE) powder.

Talk to an Expert

ChemPoint has experienced product specialists on staff to provide our customers support in finding the right solution for their project. Talk to us, we can help.

Call us: 425.372.9464

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