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Silicones Inc P-157

Chemical Family
Silicones

Silicones P-157 is a low viscosity, transparent silicone rubber used for potting or encapsulation of intricate parts where visual inspection is required. P-4 offers electrical stability, radiation resistance and will resist reversion when heated in confined spaces. Although it has high tensile strength, it can be easily cut and removed for part repair and then re-poured.

Properties

Physical Form
Gel

Product families

Applications

Electrical & Electronics — Packaging & Assembly
  • Potting Compounds
Electrical & Electronics — Parts & Components
  • Printed Circuit Boards (PCBs)

Product Families

Elastomers — Specialty Elastomers
  • Silicone Elastomers

Other characteristics

End Uses
Printed Circuit Boards
Features

Electrically Insulating, Excellent Transparency Properties, Low Viscosity, Platinum Catalyzed, Sound Damping; P-17 has excellent electrical insulating and thermal properties. It has improved mechanical properties and excels in those applications where mechanical stresses are applied.; P-157 is a low viscosity, transparent silicone rubber gel used for potting or encapsulating intricate electrical parts where visual inspection is necessary.

Polymer Name
Silicone Elastomer
Processing Methods
Potting
Markets
Electrical & Electronics
Shelf LIfe
6 months
Cure
Chemical Cure
Technology
Elastomers
Material Features
  • Electrically Insulating
  • Excellent Transparency Properties
  • Low Viscosity
  • Platinum Catalyzed
  • Sound Damping
Plastics and Elastomers End Uses
Printed Circuit Boards
Plastics and Elastomers Processing Methods
Potting

Technical data

Table 1 of 1

8 rows
CharacteristicValueUnit
Coeff of Thermal Expansion1 x 10-4cm/cm/oC
Cure Time (Hours)16 - 24—
Mixed Viscosity (+ 5000 cps)5000.0cps
Mixing Ratio (B/A)100 / 10—
Service Temperature-60 - 600°F
Viscosity10000.0cps
Volume Resistivity1 x 1014ohms/cm
Working Time (Hours)2 - 4—

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