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
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
3cc Syringe (P/n 4040)
10cc Syringe (P/n 4141)
20cc Syringe (P/n 4242)
30cc Syringe (P/n 4343)
50cc Syringe (P/n 44544)
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
