Masterbond Thermoset Epoxy

Technical datasheet

MasterSil 151S

Supplied byMaster Bond- Last Updated on Oct 10, 2025

MasterSil 151S by Master Bond is a silver-filled, two component silicone. It is a vacuum compatible and provides high electrical conductivity, low outgassing and long working life. It has exceptionally long working life and offers high resistance to temperature, mechanical and thermal shocks.
  • It bonds well to a wide variety of substrates including metals, ceramics, glass, composites as well as many types of rubber and plastics.
  • It exhibits good dimensional stability, elongation, low shrinkage upon curing and good flexibility.
  • It is ideal for bonding, sealing and coating applications.
  • Recommended for aerospace, electronic, opto-electronic and OEM applications.
  • MasterSil 151S is RoHS compliant and meets NASA Low Outgassing specifications.
  • It has a shelf life of 3 to 6 months.
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MasterSil 151S properties

Other properties

PropertiesValue & unitTest conditionTest method
CTE, Linear0.0 Visible After LoginVisible After LoginVisible After Login
Hardness, Shore D0.0 Visible After LoginVisible After LoginVisible After Login
Linear Mold Shrinkage0.0 Visible After LoginVisible After LoginVisible After Login
Mixing Ratio, Parts A to B0.0 Visible After LoginVisible After LoginVisible After Login
Service Temperature0.0 Visible After LoginVisible After LoginVisible After Login
Specific Gravity0.0 Visible After LoginVisible After LoginVisible After Login
Specific Gravity0.0 Visible After LoginVisible After LoginVisible After Login
Tensile Elongation0.0 Visible After LoginVisible After LoginVisible After Login
Tensile Lap Shear Strength0.0 Visible After LoginVisible After LoginVisible After Login
Tensile Modulus0.0 Visible After LoginVisible After LoginVisible After Login
Tensile Strength0.0 Visible After LoginVisible After LoginVisible After Login
Thermal Conductivity0.0 Visible After LoginVisible After LoginVisible After Login
Viscosity0.0 Visible After LoginVisible After LoginVisible After Login
Volume Resistivity0.0 Visible After LoginVisible After LoginVisible After Login

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