Apiezon W is a low vapour pressure wax for sealing joints in high vacuum pressure systems. It has a working temperature range of -10 to 75°C. It is the most resistant to attack by acids and alkalis, has the lowest vapour pressures and is the most resistant to water. Supplied in 1kg blocks.
Apiezon W40 is similar to type W but has a lower softening point which makes it very suitable for flow sealing in or around vacuum joints. It is not recommended for use at temperatures above 30°C. Supplied in 250g tins.
Apiezon W100 is an inherently softer wax. It can be used for semi-permanent vacuum seals or for temporary specimen mounting on SEM stubs. This wax softens at 50 - 60°C. Supplied in 250g tins.
Apiezon Q is a sealing compound which can be used for temporary seals at low vacuum. It remains firm for temperatures up to 30°C but is sufficiently pliable to permit easy moulding.