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

Wacker SEMICOSIL HMN-EL One-Component Silicone Sealant

Wacker SEMICOSIL HMN-EL is a one-component, heat-curing silicone sealant from the SEMICOSIL® EL series, designed for high-reliability electrical insulation and bonding in automotive electronics, sensors, and power modules—offering excellent adhesion, thermal stability up to 200°C, low ionic contamination, and UL94 V-0 flame retardancy.
  • wacker semicosil hmn el one component silicone sealant_bcb8e7a5
  • wacker semicosil hmn el one component silicone sealant_bcb8e7a5

Features Of Wacker SEMICOSIL HMN-EL One-Component Silicone Sealant

  1. Electrically conductive silicone formulation enabling EMI/RFI shielding and static dissipation.

  2. Room-temperature vulcanizing (RTV) one-component system with moisture-cure mechanism — no mixing required.

  3. Excellent adhesion to common substrates including plastics, metals, glass, and printed circuit board (PCB) materials.

  4. UL 94 V-0 rated for flame retardancy, supporting compliance in electronic enclosures and safety-critical assemblies.

  5. Stable electrical conductivity over time, resistant to thermal cycling and humidity aging per IEC 60068 standards.

Typical Applications Of Wacker SEMICOSIL HMN-EL One-Component Silicone Sealant

  1. EMI shielding gaskets for telecom base station housings and 5G infrastructure enclosures.

  2. Conductive sealing of medical device housings requiring electrostatic discharge (ESD) protection.

  3. Encapsulation and edge-sealing of automotive ADAS control units and battery management systems (BMS).

  4. Static-dissipative bonding in cleanroom-compatible semiconductor handling equipment.

  5. Grounding interfaces in industrial IoT gateways and smart sensor housings.

Specifications Of Wacker SEMICOSIL HMN-EL One-Component Silicone Sealant

Chemical TypeCondensation-curing, acetoxy-type silicone elastomer
Product FormPaste-like, thixotropic one-component compound
AppearanceGray, homogeneous paste
Primary ApplicationsEMI shielding, static dissipation, environmental sealing in electronics
Key FeaturesElectrically conductive, RTV, UL 94 V-0 certified, low outgassing
Shore A Hardness (7d, 23°C)35–45
Volume Resistivity (23°C)1 × 10⁻³ Ω·cm (conductive grade)
Service Temperature Range−40°C to +180°C (continuous)


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