Hiren 77 (High Vacuum Oil)

@100C Torr 4x10e-03
Pour point C ASTM D97-93 -15C
Flash point C ASTM D93-94 240C
Oil seperation min 40-40-0(5)
Reaction Neutral
Ultimate pressure Torr 1x10e-05>

Can be applied for all situations in optical science, medicine, coating, lamps and tubes, car industry, packing, metallurgy.

Can be replaced N 62, Ultragrade 19.

Packing unit:20 L, 200L

Typical Physical Properties


Specific gravity(20C)(68F) g/cm3 ASTM D1298 0.88
Kinematic viscosity(40C) cSt ASTM D445-94 76.8
Vapor pressure
@20C Torr

Useful temperature: around 60C

Uses:  Two- stage oil sealed rotary vacuum pump

that it minimizes deposits and reduces maintenance hours.

It has an outstanding resistance to oil oxidation, sludge formation and oil thickening so

contains a unique additional fluid in its highly refined base oil.

Rotary vane vacuum pump oil: Hiren 77

This product carries an excellent performance as a vacuum  pump fluid which

Rotary vane vacuum pump oil: Hiren 77