Soluble oils are complex products, supplied in the form of concentrates, used diluted 4 to 10% in water, and characterized by a lubricity lower than neat oils although offer significantly greater cooling characteristics.

There are available in three forms:

- emulsions,
- micro-emulsions
- solutions.

Main fields of use:

- machining:
	cutting,
	tapping,
	grinding
- metal wire-drawing,
- tempering