MasterSil 155

Two part, graphite filled silicone for high performance bonding, sealing and coating
Key Features
  • Reliable electrical conductivity
  • User friendly handling
  • Good flexibility and elongation
  • Withstands temperatures up to 400°F
Typical Properties
Viscosity
paste
Cure Schedule
75°F: 6-7 days; 150°F: 2-4 hours; Optimum cure schedule: overnight at 75°F followed by 2-4 hours at 150°F
Hardness
35-45 Shore A
Service Temperature Range
-85°F to +400°F
Elongation
300-400%
Volume Resistivity
20-40 ohm-cm
MasterSil 155 Two Part Silicone System
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Applications

Bonding

bonding

Sealing

sealing

Coating

Coating

Gap Filling

gap_filling
Certifications

Meets EU Directive 2015/863

Packaging

Cans

Product Description

Master Bond MasterSil 155 is a two component, electrically conductive silicone compound for high performance bonding, sealing and coating. The electrically conductive filler material is graphite. MasterSil 155 is an addition cured system that does not require air for cross linking. The mix ratio is a very convenient one to one by weight. It has a paste consistency with a very long working life of 8 hours for a 100 gram mass. Upon curing, MasterSil 155 offers good physical strength properties combining excellent flexibility and high temperature resistance. Its conductivity is most useful, for grounding, static dissipation and EMI/RFI applications. Since this silicone can cure in thicker sections, it can be used for gasketing applications as well.

The system bonds reasonably well to most substrates such as metals, plastics and many rubbers, including silicone rubber. As expected, it performs well when subjected to rigorous thermal cycling and shock. MasterSil 155 does quite well in resisting humidity, water and general environmental conditions. Both Parts A and B are black. The service temperature range is -85°F to +400°F. MasterSil 155 is primarily used for shielding and protection against electrical or other kinds of interference as outlined above.

Product Advantages

  • Addition type curing system
  • One to one mix ratio by weight
  • Very long working life
  • Cures at ambient or elevated temperatures
  • Low shrinkage upon curing
  • Non-metallic electrically conductive system
Discuss with a Specialist
(1-2 Business Day Request) Get Technical Data sheet
(Instant Email Delivery) Request Safety Data sheet
(1-2 Business Day Request)
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How to order

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Your adhesive will be made to order and shipped to you. Typical lead times are 10-14 business days, with rush options available for urgent orders.

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