NLGI Grade 1.5 PFPE-Based Grease with Non-Melting Thickener with Very High Thermal Stability up to 360°C and spikes to 400°C (Base Oil Viscosity of 1,023 cSt @40°C)
Krytox™ XHT-BDZ Grease is the highest viscosity grease within the XHT-BD series, with a base oil viscosity of 1023 cSt @40°C. This PFPE-based lubricant contains a non-melting thickener that can provide performance at higher temperatures than conventional greases where thickener melting becomes a concern (up to 360°C, and spikes to 400°C).
Krytox™ XHT-BDZ also provides excellent wet-out on metallic surfaces due to low surface tensions properties and does not interact with metal surfaces due to its chemical inertness.
Estimated Useful Range °C: –5 to 360 (with spikes to >400)
Oil Pour Point °C: -15
Base Oil Viscosity, cSt @40°C: 1023
Oil Separation in 30 hr at 99°C: 5
Oil Volatility in 22 hr, % @260°C: 1.1
Appearance: White, creamy consistency
Specific Gravity at 0°C: 2.00
NLGI Grade: 1.5
Primary Chemistry: PFPE
Excellent Lubrication over a Broad Temperature Range (-5°C to 360°C)
Great Wetting Out Performance with Low Surface Tension
Chemically Inert
Non-Flammable
Extended Lubrication Intervals & Equipment Life
Melting Grease & Lubrication Failure at Extreme Temperatures (>752°F)
Excessive Bearing Maintenance or Replacements in High Temp Applications
Highly Reactive or Potentially Flammable Greases
Krytox™ XHT-BDZ should be used in low speed bearings or pillow housings and will shear at higher speeds, causing loss of oil in sealed bearings.
The base oil in Krytox™ XHT-BDZ can begin to slowly evaporate at temperatures above 360 °C (680°F), and this evaporation will occur at an increasing rate as temperatures increase. It can withstand intermittent spikes up to and above 400°C (752°F). Re-lubrication could be required at these temperatures to achieve optimum life.
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