MasterSil 156

Two part silicone for high performance potting, encapsulation and sealing
Key Features
  • Superior thermal conductivity
  • Superb electrical insulation properties
  • Flame retardant UL 94V-0
  • Low exotherm; very long pot life
  • Can cure in thicknesses up to and beyond 1-2 inches
  • UL temperature rated up to 105°C
Typical Properties
Viscosity
35,000-50,000 cps
Cure Schedule
1-2 hours at 250°F
Hardness
50-60 Shore A
Service Temperature Range
-65°F to +221°F --65°F to +221°F
Dielectric Strength
450 volts/mil
Elongation
120-150%
MasterSil 156 Two Component Silicone
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(1-2 Business Day Request) Get Technical Data sheet
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Applications

Sealing

sealing

Encapsulation

encapsulation

Potting

potting
Certifications

Meets EU Directive 2015/863

UL 94V-0 Flame Resistant

Packaging

Cans

Product Description

Master Bond MasterSil 156 is a two component, excellent flowing, moderate viscosity silicone system for high performance potting, encapsulation and sealing. MasterSil 156 has an exceptionally long open time. The curing schedule is 1-2 hours at 250°F. Along with passing UL 94V-0 testing for flame retardancy, MasterSil 156 combines high temperature resistance, first rate flexibility, appealing thermal conductivity and sound electrical insulation values. MasterSil 156 is an addition cured system and does not require exposure to air for complete 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. MasterSil 156 is well suited for potting and encapsulation. It should be emphasized that the electrical insulation properties are rather keen and it still is a reputable thermal conductor. It bonds well to a wide variety of substrates including metals, composites, glass, ceramics and many rubbers and plastics. Its flexibility allows it to withstand severe thermal cycling and resist vibration and shock. Also, it is very resistant to water, humidity, oils and environmental elements. The system is rated 94V-0 for temperatures up to 105°C by UL for thicknesses of 1/4 inch and above. It can cure in thicknesses well beyond 1-2 inches if required. The color of both Parts A and B is gray. MasterSil 156 is a very special system that blends flexibility, high temperature resistance, heat dissipation and flame retardancy.

Product Advantages

  • Convenient one to one by weight mix ratio
  • Addition cured; virtually no by-products released during curing; does not require air
  • Potent thermal conduction and solid electrical insulation properties
  • Moderate viscosity and splendid flow; ideal for potting and encapsulation
  • Very low shrinkage upon cure
  • UL flame retardant, 94V-0 rating
 
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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