Apiezon H Grease 25g
As a high temperature, low to medium vacuum grease with good thermal conduction properties.
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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
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