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

As a high temperature, low to medium vacuum grease with good thermal conduction properties, Apiezon H Grease is used for many diverse applications. In particular H Grease is commonly used in scientific and industrial high temperature sealing applications and ideal for use with laboratory glassware; it is also favoured by the electronics and space industries where its high thermal conductivity makes it the perfect vacuum grease in situations where heat sink media requires adhesion.

Apiezon H grease has been approved by NASA as a material suitable for lubricating the gold-plated threads of small variable capacitors required to operate under high vacuum from -65 C to +125 C to prevent galling.

Properties:

• Performs well under a wide range of temperatures, from -10 to +240 C
• Retains its optimum consistency at temperatures between +10 and +110 C
• Rather than melting, it actually becomes stiffer as temperature increases and therefore is not recommended for highly stressed bearings
• Excellent heat transfer properties
• Conducts heat away from the site of operation, reducing the danger of overheating and damaging heat-sensitive components
• Powerful ‘gettering’ action absorbs potentially harmful grease and chemical impurities on metal and glass surfaces
• Easy to clean and remove as it is soluble in hydrocarbon solvents
• Vapour pressure of 1.7 x 10-9 Torr at 20 C

MSDS

Download Material Safety Data Sheet