A range of Apiezon® greases is offered for use on high vacuum systems and for many general applications in the laboratory. The high purity greases are non-toxic, are easy to apply and clean off and have long shelf lives.
Choice of grease depends largely on operating temperature.
| Technical data | M |
| Melting point | 44°C |
| Radiation resistant | Yes |
| Vapour pressure at 20°C (mbar) | <10-10 |
| Comments | Similar to L grease, but stiffer; good gettering properties |