Phillips 66® Quintolubric 958-30 is an invert emulsion (water-in-oil) fire-resistant hydraulic fluid designed for use in hydraulic systems operating in areas subject to fire hazards, such as in steel mills, foundries, and mining equipment. It combines the benefits of an oil-based hydraulic fluid with the fire-resistant properties of water. It is approved by the MSHA for use in underground mining equipment.
QUINTOLUBRIC® 958-30
INVERT EMULSION TYPE FIRE-RESISTANT HYDRAULIC FLUID

Links of Interest
Features & Benefits
- Fire resistant
- Protects against wear
- Protects against rust and corrosion
- Forms a stable emulsion
- Resists bacterial growth
- MSHA approved (Approval Number 30-20-2)
Applications
- Hydraulic systems subject to fire hazards
- Underground mining equipment requiring a fire-resistant, MSHA-approved hydraulic fluid
- Steel mills, foundries, and manufacturing plants
Technical Details
- Grade: 958-30
- Grade: 958-30
Licenses & Approvals
N/A
Additional Details
Grade | 958-30 |
Specific Gravity @ 60°F | 0.948 |
Density, lbs/gal @ 60°F | 7.9 |
Appearance, Visual | Opaque White to Tan |
Flash Point (COC), °C (°F) | N/A (1) |
Pour Point, °C (°F) | -23 (-10) |
Viscosity | |
cSt @ 50°F | 374 |
cSt @ 100°F | 90 |
Viscosity Index | 135 |
Freeze-Thaw Stability, 10 Cycles, Water Separation, % | None |
Water Content, vol % | ~45 |