Triton®OSP 320 (old)

Premium Synthetic, Extreme-Pressure, Water-Resistant Calcium Sulfonate Grease
Phillips 66®Triton OSP 320 is a premium quality, synthetic, extreme-pressure (EP) calcium sulfonate grease specially developed for use in industrial and heavy mobile equipment operating under severe conditions involving high loads, high temperatures and/or high humidity.

Features & Benefits

• Excellent oxidation resistance and thermal stability at high temperatures

• Outstanding rust and corrosion protection, including resistance to saltwater corrosion

• Excellent extreme-pressure and antiwear properties

• Outstanding resistance to water washout

• Outstanding shear stability

• High dropping point (>550°F)

• Does not contain heavy metals or other environmentally undesirable components


• Industrial equipment operating under unfavorable conditions involving water contamination, high loads and/or high temperatures

• Plain and rolling-element bearings operating in corrosive environmental conditions

• Steel mill and slab mill roller bearings

• Marine and heavy mobile equipment exposed to salt water

• Paper machine wet-and dry-end bearings and hot calender stacks

Technical Details

Licenses & Approvals


Additional Details
NLGI Grade2
ThickenerCalcium Sulfonate
Dropping Point, °C (°F)300 (572)
Penetration, ASTM D217 (worked 60 strokes)265-295
Four-Ball EP, ASTM D2596, Weld Load, kgf400
Four-Ball Wear, ASTM D2266, Scar Diameter, mm0.5
Oxidation Stability, ASTM D942, 100 hrs, Pressure Drop, psi (kPa)1 (7)
Rust Prevention, ASTM D1743Pass
Water Washout Resistance, ASTM D1264, 175°F, Wt Loss, %2
Base Oil Properties:
cSt @ 40°C334
cSt @ 100°C44
SUS @ 100°F1700
SUS @ 210°F212
Viscosity Index189
Usable Temperature Range:
Minimum, °C (°F)-34 (-30)
Maximum, Continuous Service, °C (°F)190 (375)
Maximum, Intermittent Service, °C (°F)204 (400)