Two component, addition cured silicone for bonding and sealing applications

Key Features

  • Very long pot life
  • Remarkable flexibility
  • High temperature resistance
  • Resists vibration, shock and thermal cycling
  • Self priming system
  • Exceptionally high tensile lap shear strength

Product Description

Master Bond MasterSil 153 is a two component, paste silicone compound for high performance bonding and sealing. MasterSil 153 is an addition cured system and does not require exposure to air for cross-linking. It has a convenient one to one mix ratio by weight, and will not outgas while curing. It is 100% solids and contains no solvents. First and foremost, MasterSil 153, as is true with silicones in general, offers remarkable flexibility and high temperature resistance. MasterSil 153 has an exceptionally long working life and very low exotherm. It bonds well to a wide variety of substrates including most metals, many plastics, glass and ceramic. Most importantly, it will bond well to cured silicone rubber. It has superb electrical insulation properties. Its remarkable flexibility allows it to withstand severe thermal cycling and resist vibration and shock. Its self priming feature enhances the bonding properties of the system. Also, it is very water resistant. MasterSil 153 can be used in a variety of applications involving optical, electrical, aerospace and medical devices. MasterSil 153 is translucent, although, it can be formulated in various colors. The service temperature range for this system is -65°F to +400°F.

Product Advantages

  • Addition cured; no by-products released during cure; does not require air for curing
  • Low exotherm; very long pot life
  • Readily cures at ambient temperatures or faster cure at elevated temperatures
  • Very low shrinkage upon cure
  • Bonds well to a variety of substrates including silicone rubber
  • Self priming feature
  • Superior electrical insulation properties; highly resistant to water
  • Outstanding flexibility combined with high temperature resistance

Industrial Certifications

Meets EU Directive 2015/863




MasterSil 153 is available is various sizes and units to accommodate customer's needs.

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