Krytox™ NRT 8900 is formulated for use in cold to ambient conditions, and is recommended as a cost-effective valve packing and seal lubricant for O-rings. It has a viscosity of 18.7 cSt @ 40 degrees C and is NLGI grade 2.
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.
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.
NLGI Grade: 2
Estimated Temperature Range: –51°C to +121°C
Oil Viscosity, kinematic cSt, ASTM D445, @40°C: 18.7
Oil Density, g/mL: 1.90
Primary Chemistry: PFPE
End Markets: Chemical & Petrochemical; Oil & Gas
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. The PTFE thickener forms a barrier that holds the base oil at friction contact points for long-term lubrication, without requiring complicated oil recirculation systems. Anit-corrosion, High Temperature and High Pressure additives are also provided for specialized applications.