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Rulon Bearings

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Donnelly Bros HT 250 High Temperature Mold Grease
Categories: Fluid; Lubricant; Polyalphaolefin (PAO); Silica Gellant

Material Notes: Off white, smooth appearance. Works well in constant metal temperature of 200° F to 250° F. (Note: The plastic molding material itself might be >600° F.)

A stiff, silica thickened, medium viscosity, synthetic hydrocarbon grease intended for mechanical components requiring a light amount of damping. Benefits include enhanced lubricity.

Information provided by Donnelly Bros. Inc.

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Physical PropertiesOriginal ValueComments
Viscosity Measurement 280Viscosity Index; ASTM D2270
Viscosity Measure >= 1.00e+6 cSt
@Temperature 40.0 °C
Kinematic Viscosity; ASTM D445
Kinematic Viscosity at 40°C (104°F) 5548 cStASTM D445
Kinematic Viscosity at 100°C (212°F) 525 cStASTM D445
Evaporation Loss 0.10 %100°C; 24 hrs
 
Mechanical PropertiesOriginal ValueComments
Penetration P(0), 1/10 mm 240ASTM D217
Penetration P(60), 1/10 mm 256ASTM D217
Oil Separation 0.60 %100°C; 24 hrs; FTM 791B, 321.2
 
Thermal PropertiesOriginal ValueComments
Maximum Service Temperature, Air 120 °C
Minimum Service Temperature, Air -30.0 °C
Pour Point -30.0 °CASTM D97
Flash Point >= 200 °CBase Oil (Synthetic Oil 274); ASTM D92
Dropping Point >= 260 °CNon-melting; ASTM D2265
 
Descriptive Properties
AppearanceSmooth
Base OilSynthetic Oil 274
ColorOff White
NLGI Grade2-3ASTM D217

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