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What is Apiezon H grease?

Apiezon is manufactured by M&I Materials LIMITED.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.

What are the properties of Apiezon H grease?

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 solvents

exhibits a vapour pressure of 1.7 x 10-9 Torr at 20°C

Available to buy in 25g tubes.

When should Apiezon H grease be used?

As a high temperature, low to medium vacuum grease with excellent ‘stiction’ power and 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.

Thanks to its ‘stiction’ power Apiezon H Grease is ideal for use with laboratory glassware such as short path distillation systems; 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.

To find out more about Apiezon H Grease or the Apiezon family of silicone-free high vacuum greases manufactured by M&I Materials Ltd, contact our team of experts available via our helpline and online.

Apiezon H Grease Vapour Pressure Graph

The above is shared with you by Apiezon H Grease.