| 摘要 |
PURPOSE:To provide the subject hydraulic oil composition for a bumper, exhibiting excellent friction properties under a condition where fine vibrations or fine oscillations are applied to the bumper and sufficiently excellent in abrasion resistance and friction properties even in the case of a bumper made of a polytetrafluoroethylene resin member. CONSTITUTION:The hydraulic oil composition for a bumper characteristically contains a base oil, one or more kinds of compounds selected from a phosphate, a phosphite and an amine salt of a phosphate and an alkanolamine. |
