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

Wacker SEMICOSIL HMN-EL Silicone Rubber

Wacker SEMICOSIL HMN-EL is a high-performance electrically conductive liquid silicone rubber (LSR) from Wacker’s SEMICOSIL® series. It offers excellent compression set resistance, thermal stability up to 180°C, and consistent conductivity via embedded metal particles. Ideal for EMI shielding, grounding, and static-dissipative components in automotive and electronics applications. Fast-curing, platinum-catalyzed, and suitable for injection molding.
  • wacker semicosil hmn el silicone rubber_8c2cf240
  • wacker semicosil hmn el silicone rubber_8c2cf240

Features Of Wacker SEMICOSIL HMN-EL Silicone Rubber

  1. Electrically conductive silicone rubber with stable, low-volume resistivity for reliable EMI shielding and static dissipation.

  2. High-temperature vulcanization (HTV) grade offering excellent thermal stability up to 200 °C continuous service.

  3. Outstanding compression set resistance ensuring long-term sealing and mechanical integrity in dynamic applications.

  4. Good adhesion to common substrates including metals and engineering plastics without requiring primers.

  5. UL 94 HB rated for flammability compliance in electronic enclosures and industrial housings.

Typical Applications Of Wacker SEMICOSIL HMN-EL Silicone Rubber

  1. EMI/RFI shielding gaskets for telecom base stations and 5G infrastructure equipment.

  2. Static-dissipative seals in semiconductor manufacturing tools and cleanroom automation systems.

  3. Conductive interface pads for heat sinks and power electronics modules requiring grounding continuity.

  4. Custom-molded conductive components in medical diagnostic devices and analytical instrumentation.

  5. Environmental seals for automotive ADAS sensors and battery management system housings.

Specifications Of Wacker SEMICOSIL HMN-EL Silicone Rubber

Chemical TypePlatinum-cured high-consistency silicone rubber (HCR)
Product FormUncured compound in sheet or slab form; supplied as two-part (base + catalyst)
AppearanceGray, homogeneous elastomeric compound
Volume Resistivity (Cured)1 × 10³ – 1 × 10⁴ Ω·cm (per ASTM D257)
Hardness (Shore A, cured)60 ± 5
Tensile Strength (cured)≥ 6.0 MPa (per ASTM D412)
Elongation at Break (cured)≥ 120 % (per ASTM D412)
Primary ApplicationsEMI shielding, static control, grounding, and environmental sealing


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