| Device to produce a flow of air at higher then atmospheric pressure. Normally referred to as a Thermactor air supply pump. | |
| A friction reducing bearing that uses a series of steel balls held between inner and outer bearing races, such as in a roller clutch. | |
| And organic chemical compounds made up of carbon, Coreen and fluorine atoms, usually used in refrigeration. R12 is a CFC. | |
| Automatic transmission fluid |