Apiezon H Grease

Apiezon H Grease is a silicone-free high vacuum grease perfectly suited for use at high temperatures in both scientific and industrial applications. H Grease has exceptional ‘stiction’ and thermal conduction properties and has gained prestigious approvals from a variety of international organisations, including BAE Systems, the European Space Agency and NASA.

Apiezon H Grease: High Temperature Vacuum Grease Properties

Apiezon H Grease is a silicone-free high temperature vacuum grease which:

• performs well under a wide range of temperatures, from -10 to +240°C, and retains its optimum consistency at temperatures between +10 and +110°C
• rather than melting, actually becomes stiffer as temperature increases and therefore is not recommended for highly stressed bearings
• has excellent heat transfer properties
• conducts heat away from the site of operation, reducing the danger of overheating and damaging heat-sensitive components
• exhibits good ‘stiction’ or sticking power
• has powerful ‘gettering’ action, meaning it absorbs potentially harmful grease and chemical impurities on metal and glass surfaces
• is easy to clean and remove as it is soluble in hydrocarbon and chlorinated solvents
• exhibits a vapour pressure of 1.7 x 10^-9 Torr at 20°C