Products

SYLGARD™ 186 Silicone Elastomer

  • Technology: Silicone Elastomer
  • Brand Name: SYLGARD™ 186 Silicone Elastomer
  • Manufacturer: Dow
  • Package Size: Contact Avantek for details.
  • Shelf Life: 12 months

1. Product Overview

SYLGARD™ 186 Silicone Elastomer is a two-part, 10:1 mix ratio, high-viscosity, translucent encapsulant with high tear strength. It is designed for potting and encapsulation applications, providing reliable protection for electrical and electronic components. It offers room-temperature and heat-cure options, rapid processing, and meets UL requirements.

2. Applications

  • General potting applications
  • Power supplies
  • Connectors
  • Sensors
  • Industrial controls
  • Transformers
  • Amplifiers
  • High-voltage resistor packs
  • Relays
  • Adhesive/encapsulant for solar cells
  • Adhesive for handling beam lead integrated circuits during processing

3. Typical Properties

Property Unit Part A (Base) Mixed (After Mixing) Cured
Viscosity cP (mPa·s) 123,800 66,700
Working Time (Pot Life) at 25°C hours 1.65
Heat Cure Time @ 100°C minutes 25
Heat Cure Time @ 125°C minutes 15
Heat Cure Time @ 150°C minutes 15
Specific Gravity 1.12
Tensile Strength psi (MPa) 305 (2.1)
Elongation % 255
Tear Strength (Die B) ppi (N/cm) 100 (70)
Durometer Hardness Shore A 24
Dielectric Constant @ 100 Hz 2.70
Dielectric Constant @ 100 kHz 2.68
Volume Resistivity ohm·cm 4.98E+15
Dissipation Factor @ 100 Hz 0.00002
Dissipation Factor @ 100 kHz 0.00006
Hardening Transition (DSC) °C (°F) -55 (-67)
Shelf Life at 25°C months 12

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