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

Wacker ELASTOSIL A234 Silicone Rubber

Wacker ELASTOSIL A234 is a platinum-cured liquid silicone rubber (LSR) offering excellent mechanical strength thermal stability and biocompatibility ideal for medical device molding and high-precision technical parts processing via injection molding or casting.
  • wacker elastosil a234 silicone rubber_aa71bd31
  • wacker elastosil a234 silicone rubber_aa71bd31

Features Of Wacker ELASTOSIL A234 Silicone Rubber

  1. Platinum-catalyzed addition-cure system for excellent shelf stability and precise processing control.

  2. Low viscosity before curing enables easy mixing, degassing, and mold filling—even for intricate geometries.

  3. Excellent thermal stability with continuous service temperature range from –60 °C to +180 °C.

  4. Outstanding electrical insulation properties and low dielectric loss across wide frequency and temperature ranges.

  5. Biocompatibility compliant with ISO 10993-5 (cytotoxicity) and USP Class VI testing for medical-grade applications.

Typical Applications Of Wacker ELASTOSIL A234 Silicone Rubber

  1. Medical device components including seals, gaskets, and housings for diagnostic and therapeutic equipment.

  2. High-reliability encapsulation and potting of sensitive electronics in automotive and industrial control units.

  3. Soft-touch overmolding on rigid substrates for consumer electronics and wearable devices.

  4. Food-contact compliant seals and gaskets for processing equipment meeting FDA 21 CFR §177.2600 requirements.

  5. Prototyping and low-volume production of precision silicone parts via vacuum casting or injection molding.

Specifications Of Wacker ELASTOSIL A234 Silicone Rubber

Chemical TypePlatinum-cured addition-cure liquid silicone rubber (LSR)
Product FormTwo-component liquid system (Part A: base, Part B: catalyst)
Appearance (Part A)Translucent, viscous liquid
Appearance (Part B)Translucent, low-viscosity liquid
Mixing Ratio (A:B)10:1 by weight
Cure Temperature Range25–150 °C (room temperature cure possible with extended time)
Shore A Hardness (cured)34 ± 2
Primary ApplicationsMedical, electronics encapsulation, food contact, soft-touch overmolding


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