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Rulon Bearings

Momentive Performance Materials RTV577 Silicone Rubber Compound for Low Temperature Potting, Encapsulating and Sealing, White
Categories: Polymer; Adhesive; Thermoset; Silicone; Silicone, RTV, Adhesive/Sealant Grade

Material Notes: RTV511, RTV560 and RTV577 silicone rubber compounds are low temperature two-part silicone elastomers. They are supplied ready to use with a base compound and DBT (dibutyl tin dilaurate) as the standard curing agent. DBT is suitable for most applications, however, other catalysts are available to facilitate deep section cure, faster cure and automated mixing.

Mechanical and electrical properties for 0.5 wt% DBT curing agent added, cured 7 days at 25°C and 50% relative humidity.

Key Performance Properties:

  • Variable work times and cure rates by adjusting the amount and type of curing agent
  • Room temperature cure
  • Composition free of solvents and solvent odor
  • Excellent adhesion capabilities with primer
  • Excellent release properties

Applications:

  • Cast-in-place heat shielding
  • Thermal insulation
  • Low and high-temperature bonding
  • Potting and encapsulation of electrical assemblies

GE Silicones became a part of Momentive Performance Materials in 2006.

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Physical PropertiesMetricEnglishComments
Specific Gravity 1.35 g/cc1.35 g/cc
Viscosity 700000 cP700000 cP
Linear Mold Shrinkage 0.0065 cm/cm0.0065 in/in
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 4848
Tensile Strength, Ultimate 3.04 MPa441 psi
Elongation at Break 150 %150 %
Tear Strength 6.67 kN/m38.1 pli
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 5.60e+14 ohm-cm5.60e+14 ohm-cm
Dielectric Constant 3.9
@Frequency 1000 Hz
3.9
@Frequency 1000 Hz
Dielectric Strength 18.5 kV/mm470 kV/in
Dissipation Factor 0.020
@Frequency 1000 Hz
0.020
@Frequency 1000 Hz
 
Thermal PropertiesMetricEnglishComments
CTE, linear 200 µm/m-°C
@Temperature 20.0 °C
111 µin/in-°F
@Temperature 68.0 °F
Specific Heat Capacity 1.46 J/g-°C0.350 BTU/lb-°F
Thermal Conductivity 0.310 W/m-K2.15 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 204 °C399 °FContinuous
 260 °C500 °FIntermittent
Brittleness Temperature -115 °C-175 °F
 
Processing PropertiesMetricEnglishComments
Cure Time 1440 min
@Temperature 25.0 °C
24.0 hour
@Temperature 77.0 °F
0.5% DBT curing agent added
 
Descriptive Properties
ColorWhite
ConsistencyPaste
Work Time2 hoursAt 25°C, 0.5% DBT curing agent added

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PGESIL032 / 41023

Master Bond adhesives

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