For increased resistance!
Quenching oils are used for hardening work-pieces. This is achieved by quenching the heated workpiece in an oil bath. As a result the structure of the material changes. In order to relieve stresses it is essential that the work piece is tempered after hardening.
EvoFluid BHO (hardening oils)
The hardening oils EvoFluid BHO have a mild quenching effect. They minimize discolouring of the workpiece during quenching. They possess a high ageing stability and thus will retain their durability in the oil baths.