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

Wacker SILPURAN 4200 Silicone Rubber

Wacker SILPURAN 4200 is a high-purity, platinum-cured liquid silicone rubber (LSR) from Wacker’s SILPURAN® medical-grade series. Designed for precision injection molding, it offers excellent biocompatibility, thermal stability, and low extractables—ideal for Class VI-certified healthcare devices, baby care products, and demanding elastomeric applications requiring consistent rheology and rapid vulcanization.
  • wacker silpuran 4200 silicone rubber_4e9a5016
  • wacker silpuran 4200 silicone rubber_4e9a5016

Features Of Wacker SILPURAN 4200 Silicone Rubber

  1. High biocompatibility, compliant with USP Class VI and ISO 10993-5/-10 for medical device applications.

  2. Excellent thermal stability with continuous service temperature range from –60 °C to +200 °C.

  3. Low compression set (<15% after 70 h at 175 °C), ensuring long-term sealing performance.

  4. Good processability via liquid injection molding (LIM) and extrusion due to controlled viscosity and pot life.

  5. Platinum-catalyzed addition cure system with negligible by-products and high dimensional stability.

Typical Applications Of Wacker SILPURAN 4200 Silicone Rubber

  1. Medical tubing and catheters requiring flexibility, kink resistance, and sterilization compatibility.

  2. Implantable components such as pacemaker leads and drug delivery reservoirs.

  3. Seals and gaskets for pharmaceutical processing equipment and cleanroom environments.

  4. Soft-touch grips and ergonomic housings for diagnostic and therapeutic devices.

  5. Food-contact parts in beverage dispensing systems and dairy processing equipment.

Specifications Of Wacker SILPURAN 4200 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-curing silicone elastomer
Product FormTwo-component liquid silicone rubber (Part A + Part B)
AppearanceTranslucent, low-viscosity liquid (Part A); translucent liquid catalyst (Part B)
Shore A Hardness (Cured, 7 d @ 23 °C)40 ± 2
Tensile Strength (Cured, ISO 37)8.5 MPa min
Elongation at Break (Cured, ISO 37)450% min
Density (Cured, ISO 1183)1.12 g/cm³ approx
Primary ApplicationsMedical devices, pharmaceutical systems, food-grade components


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