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

Wacker ELASTOSIL 4100 Silicone Rubber

Wacker ELASTOSIL® 4100 is a two-component, addition-cure liquid silicone rubber (LSR) offering excellent flowability, low viscosity, and outstanding mechanical properties after curing. Ideal for precision injection molding of medical devices, automotive seals, and consumer goods, it delivers high tear strength, thermal stability, and biocompatibility per ISO 10993.
  • wacker elastosil 4100 silicone rubber_140b1d7d
  • wacker elastosil 4100 silicone rubber_140b1d7d

Features Of Wacker ELASTOSIL 4100 Silicone Rubber

  1. Platinum-catalyzed addition-cure system for excellent thermal stability and low compression set.

  2. High tear strength and elongation at break, enabling reliable performance in dynamic sealing applications.

  3. Excellent biocompatibility and compliance with ISO 10993-5 and USP Class VI standards.

  4. Low viscosity before curing, ensuring easy processing via injection molding or dispensing.

  5. Shore A hardness of 40 ± 2, offering a balanced combination of flexibility and mechanical resilience.

Typical Applications Of Wacker ELASTOSIL 4100 Silicone Rubber

  1. Medical device components including tubing, gaskets, and implantable housings.

  2. Pharmaceutical primary packaging seals and stoppers for vials and syringes.

  3. Food-grade seals and gaskets compliant with FDA 21 CFR §177.2350.

  4. Automotive sensors and electronic encapsulation requiring long-term reliability.

  5. Consumer healthcare products such as wearable drug delivery patches and diagnostic housings.

Specifications Of Wacker ELASTOSIL 4100 Silicone Rubber

Chemical TypePlatinum-cured liquid silicone rubber (LSR)
Product FormTwo-component liquid system (Part A + Part B)
AppearanceTranslucent, low-viscosity liquid
Shore A Hardness (cured, 7 days @ 23°C)40 ± 2
Tensile Strength (ISO 37)6.5 MPa (min)
Elongation at Break (ISO 37)450 % (min)
Compression Set (ISO 815, 24 h @ 150°C)≤ 20 %
Curing SystemAddition cure (hydrosilylation)


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