Apiezon AP101 Grease
What is Apiezon AP101 grease?
Apiezon AP101 is a silicone-free, excellent general purpose, hydrocarbon grease, which is intended for a variety of industrial and scientific applications.
Apiezon AP101 is a specialist, anti-seize vacuum grease, containing PTFE, which confers superior anti-seize properties providing glass and metal surfaces with long-lasting lubrication and protection from fusing and corrosion.
What are the properties of Apiezon AP101 grease?
Apiezon AP101 is a silicone-free anti-seize vacuum grease which:
- is ideally suited for use in low to medium vacuum ranges having a vapour pressure of <10-5 Torr at 20°C
- has anti-seize properties, making it an effective protector and lubricant for metal surfaces which may be subject to seizure or corrosion
- is a critical lubricant
- is insoluble in most solvents, is resistant to water, alcohols, ketones and esters
- resists attack from aqueous acid and alkali solutions, alcoholic alkali solutions and corrosive gases.
- is suitable for use over a wide temperature range
- does not suffer from contamination problems associated with silicone based greases such as ‘creep’ or ‘carry over’
- is easy to clean and remove using hot water and an aqueous glassware detergent or hydrocarbon solvents.
- Available to buy in 50g tubes.
When should Apiezon AP101 grease be used?
Apiezon AP101 with its superior anti-seize properties is typically used to maintain the smooth operation of stopcocks and taps in scientific and industrial settings. Coupled with easy separation of ground or polished glass joints AP101 is an excellent general purpose grease for laboratory use.
The value of Apiezon AP101 anti-seize properties is not limited to laboratory or glassware use, but is equally effective when used on metal equipment which may be subject to seizure or corrosion. Just a small amount of AP101 on fastenings which, when exposed to corrosive environments would normally jam solid, will ensure they are protected.
Apiezon AP101 is an excellent general purpose grease for sealing joints and is ideal for use in critical lubrication conditions such as highly stressed bearings.
Being hydrocarbon based, Apiezon AP101 does not suffer from the problems of “creep” or “carry over” which is traditionally associated with silicone greases. It reduces sample contamination and consequently the risk of interference in analytical techniques such as infra-red and mass spectrometry. Additionally AP101 can be used with confidence in paint spraying and metal deposition processes.
To find out more about Apiezon AP101 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 AP101 Grease Vapour Pressure Graph
Apiezon AP101 Grease FAQs
Q: How do you clean off Apiezon hydrocarbon greases?
A: Wipe off any excess grease with a soft clean lint free cloth. Any residues of grease can be washed away with warm soapy water or by using any aromatic hydrocarbon solvent (toluene, xylene). For a more environmentally friendly solvent, we recommend limonene. They cannot be cleaned using alcohols (ethanol, IPA) or ketones (acetone, MEK).
Q: What is the shelf life of an opened Apiezon container?
A: The complex chemical structure of Apiezon greases gives them strong ‘gettering’ properties, this means that they will readily absorb airborne vapours particularly water, and other hydrocarbons. If volatile vapours are absorbed then the greases will lose their excellent vapour pressure characteristics until these contaminants have been outgassed.
This is why we pack the greases in ‘vapour-proof’ aluminium tubes. As we have no control over the use of the greases once they have been opened we cannot quote a shelf life for the products after opening. Practically, however, if care is taken in re-capping the tubes immediately after use and they are not exposed to volatiles then a long service life should not be a problem.
Apart from absorption of volatiles the products are stable and no other changes would be anticipated in the long term. Apiezon PFPE 501 is perfluoropolyether-based and hence is highly inert and less likely to absorb airborne vapours than the hydrocarbon greases.
Q: What o-ring materials are compatible with Apiezon hydrocarbon oils and greases?
A: Apiezon hydrocarbon greases and oils are silicone-free and are compatible with a wide range of o-ring materials including viton, silicone, nitrile (>30% nitrile content), nylon, polyurethane, polyethylene and polypropylene. Due to their hydrocarbon formulation they are not compatible with EPDM (ethylene propylene diene M-class rubber), EPR (ethylene propylene rubber), Butyl rubber and PVC seals.
Q: Are Apiezon hydrocarbon greases resistant to acidic vapours or chlorine?
A: Apiezon hydrocarbon greases are all based on molecularly distilled hydrocarbons and as such will show a high degree of resistance to acidic reagents and chlorine.
Q: Are Apiezon greases suitable for use in an oxygen (or LOX) environment?
A: Due to the small risk of auto-ignition from hydrocarbon-based greases, PFPE 501 is the only product in the Apiezon range suitable for use in this application.
Q: Are Apiezon greases resistant to radiation?
A: Apiezon L and M greases show a degree of radiation resistance with only a comparatively small increase in stiffness after irradiation with 4 MeV electrons to a level of about 1 MGy. After this exposure the lubrication properties of the grease are still satisfactory and this is true at even higher levels of irradiation, although the stiffness increases more rapidly.
At high levels of irradiation small quantities of gases, (mainly methane and ethylene) are evolved so that the grease loses its very low vapour pressure characteristics. Nevertheless Apiezon greases L and M are markedly better lubricants at high irradiation levels than other high vacuum lubricants such as silicones, esters and halogenated products.
Q: Do Apiezon greases show luminescence under UV radiation?
A: With the exception of Apiezon PFPE 501, all of the Apiezon greases show blue luminescence. Full details are in the paper “Long-Lived luminescence from commonly used Apiezon compounds” D.W Cooke, B.L. Bennett. Journal of Luminescence 65:1996. A copy is available on request.
Q: I manufacture edible products – what is the best grease to use?
A: You may now use Apiezon PFPE 501 where incidental food contact may occur, such as to lubricate chains or other machinery parts. The content in the final product must not exceed 10ppm (parts per million).
Q: What happens to Apiezon greases above their melting point?
A: All the greases (apart from Apiezon H grease) liquefy but then return to their normal state and properties on cooling, providing the temperature rise has not been excessive. The melting point of Apiezon PFPE 501 is higher than its 250°C operating temperature limit, which should not be exceeded (see respective Safety Data Sheet).