Krytox™ XHT-S is an NLGI Grade 2 PFPE-based lubricating grease with a PTFE thickener that exhibits very high thermal stability, up to 300°C, and a base oil viscosity of 500 cSt at 40°C.
Krytox™ XHT-S is a high-performance PFPE-based grease for applications with extremely high temperatures, up to 300°C (572°F). This multifunctional, extreme-pressure lubricating oil does not contain additional performance additives and is completely inert, making Krytox™ XHT-S an ideal lubricant when there is a potential for chemical–lubricant interaction between process steps.
Krytox™ XHT-S provides incredibly durable performance in extreme environments where traditional lubricants degrade or entirely evaporate. Krytox™ XHT-S is formulated for a variety of industries with typical applications, including valve, bearing and gasket lubrication, welding machines, and textile equipment.
Estimated useful range: −20°C to 300°C
Base oil viscosity, cSt @ 40°C: 500
Oil viscosity index: 149
Oil pour point °C: −25
Oil volatility in 22 hrs, % @ 260°C: <1
Appearance: White, creamy consistency
Specific gravity at 0°C: 1.99
NLGI Grade: 2
Food contact approval: None
Primary Chemistry: Perfluoropolyether (PFPE)
Nonflammable
Oxygen safe
Chemically inert
Extended lubrication intervals and equipment life
Broad thermal stability (−20°C to 300°C)
Low oil evaporation
Provides long bearing life
Compatible with most elastomers and plastics
Contains no additives
Low surface tension
Shear stability
Nonvolatile
Nonoxidizing
High-speed bearing failure due to inferior grease
High oil-evaporation rates in grease
Melting grease thickeners and migration
Oxidation
Poor bearing life
Poor compatibility
Krytox™ XHT-S Grease can be used in a wide variety of high-temperature applications, including but not limited to:
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
Valves
Lubrication of high-temperature bearings and control systems
The Krytox™ XHT line of performance greases provide unrivaled thermal stability at extremely high temperatures. Explore how these highly engineered lubricants provide longer lasting protection and allow for extended equipment lifespan here.
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