Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Wacker POWERSIL INSULATOR FINISH Silicone Rubber

Wacker POWERSIL INSULATOR FINISH is a high-performance liquid silicone rubber engineered for electrical insulation coatings on composite insulators. Featuring excellent hydrophobicity retention, UV resistance and thermal stability up to 200°C, it ensures long-term reliability in harsh outdoor environments. Its low viscosity enables uniform dip-coating or spraying, while rapid platinum-catalyzed curing enhances production efficiency. Widely used in power transmission and distribution applications globally.
  • wacker powersil insulator finish silicone rubber_ee5f89da
  • wacker powersil insulator finish silicone rubber_ee5f89da

Features Of Wacker POWERSIL INSULATOR FINISH Silicone Rubber

  1. Excellent electrical insulation performance up to 35 kV, validated under IEC 60587 and ASTM D2303 standards.

  2. Superior hydrophobicity and rapid hydrophobicity recovery after contamination or wetting.

  3. Outstanding UV resistance and long-term weatherability for outdoor high-voltage applications.

  4. Low surface energy and anti-tracking properties, minimizing leakage current and erosion risk.

  5. Easy-to-apply liquid silicone formulation with controlled viscosity for dip, spray, or brush coating.

Typical Applications Of Wacker POWERSIL INSULATOR FINISH Silicone Rubber

  1. Coating for ceramic and composite insulators in transmission and distribution networks.

  2. Surface treatment of polymer-housed surge arresters to enhance pollution performance.

  3. Re-coating of aged or contaminated line insulators in coastal and industrial environments.

  4. Protection layer for bushings, cable terminations, and other high-voltage outdoor equipment.

  5. Field-applied insulation upgrade for substations operating in high-pollution or high-humidity areas.

Specifications Of Wacker POWERSIL INSULATOR FINISH Silicone Rubber

Chemical TypePlatinum-cured liquid silicone rubber (LSR)
Product FormTwo-component liquid system (Part A + Part B)
AppearanceTransparent to translucent viscous liquid
Primary ApplicationsHigh-voltage insulator surface finishing and hydrophobicity restoration
Key FeaturesHydrophobicity recovery, arc resistance, UV stability, low surface energy
Shelf Life (unopened)12 months at 25 °C in original sealed packaging
Curing Temperature RangeAmbient cure (23 °C, 7 days) or accelerated cure (60–80 °C, 2–4 hours)
ComplianceIEC 62073, IEEE 1794, RoHS Directive 2011/65/EU


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