High Temperature Purity Grease

TorrLube Purity Grease is a high-performance vacuum grease designed for use in critical high-temperature and high-vacuum applications, providing ultimate cleanliness, lubricity, and chemical resistance

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TorrLube High-Temperature Purity Grease is recommended for vacuum and controlled-atmosphere systems that require clean, nonflammable, chemically inert lubrication with smooth application and broad temperature performance. It is especially useful when a lighter grease consistency is preferred for easier application, spreading, or removal.

Common application areas include:

High-vacuum systems and components

Cleanroom and contamination-sensitive equipment

Semiconductor processing equipment

Oven, dryer, and deposition systems

Oxygen-rich or oxygen-service environments

Precision bearings, slides, seals, and mechanical interfaces

O-rings and elastomer sealing surfaces where compatible

Property	High-Temperature Purity Grease Specification	Engineering Relevance
Vapor Pressure of Base Oil at 20°C	≤ 8 × 10⁻¹⁰ Torr	Helps reduce evaporation, outgassing, and contamination in high-vacuum and clean environments
Operating Temperature Range	-20°C to +255°C / -4°F to 491°F	Supports use across low-temperature conditions and high-temperature equipment environments
Base Oil Chemistry	PFPE / Perfluoropolyether	Provides chemical inertness, oxidation resistance, and long-term lubricant stability
Thickener	Sub-micron PTFE powder, approx. 0.45 µm	Provides smooth consistency, stable grease structure, and clean film performance
Product Type	PFPE high-vacuum grease	Designed for clean lubrication in vacuum, cleanroom, and high-temperature applications
Base Oil Pour Point	-26°C / -15°F	Supports better low-temperature usability and application flow
Base Oil Viscosity at 20°C	1,738 cSt	Lightest base oil in the grease family for easier application and spreading
Base Oil Viscosity at 40°C	505 cSt	Provides stable lubrication under moderate operating temperatures
Base Oil Viscosity at 100°C	48 cSt	Maintains useful film strength at elevated temperatures
Base Oil Viscosity Index	149	Supports stable viscosity behavior across temperature changes
Flammability	Nonflammable PFPE formulation	Supports use where fire-risk reduction is important
Chemical Resistance	Chemically inert PFPE formulation	Resists reaction with acids, bases, solvents, fuels, oxidizers, and aggressive environments
Oxygen Compatibility	Stable in oxygen-rich environments when properly specified	Supports oxygen-service applications where standard greases may not be suitable
Outgassing Profile	Very low outgassing	Helps maintain vacuum cleanliness and protect sensitive components from vapor contamination

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High Temperature Purity Grease

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