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

Wacker SILPURAN 2420 A B Two-Component Silicone Rubber

Wacker SILPURAN 2420 A/B is a platinum-cured two-component addition-cure liquid silicone rubber offering excellent transparency, low viscosity, and rapid room-temperature or elevated-temperature curing. Ideal for precision molding, encapsulation, and medical device manufacturing due to its biocompatibility (ISO 10993 compliant), thermal stability, and low compression set.
  • wacker silpuran 2420 a b two component silicone rubber_ca73272f
  • wacker silpuran 2420 a b two component silicone rubber_ca73272f

Features Of Wacker SILPURAN 2420 A B Two-Component Silicone Rubber

  1. Platinum-catalyzed addition-cure system offering excellent biocompatibility and low extractables.

  2. High transparency and exceptional optical clarity after curing.

  3. Outstanding thermal stability with continuous service temperature up to 180 °C.

  4. Low compression set and excellent resilience for dynamic sealing applications.

  5. Easy processing with adjustable pot life and rapid, uniform cure at elevated temperatures.

Typical Applications Of Wacker SILPURAN 2420 A B Two-Component Silicone Rubber

  1. Medical devices requiring ISO 10993 and USP Class VI compliance.

  2. Pharmaceutical tubing and fluid-contact components in drug delivery systems.

  3. Optical encapsulation and light-diffusing elements in LED lighting assemblies.

  4. High-purity seals and gaskets for semiconductor manufacturing equipment.

  5. Food-grade molds and sanitary processing components compliant with FDA 21 CFR §177.2600.

Specifications Of Wacker SILPURAN 2420 A B Two-Component Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure liquid silicone rubber (LSR)
Product FormTwo-component (A + B) liquid system, supplied separately
Appearance (Uncured)Component A: Transparent, low-viscosity liquid; Component B: Transparent, low-viscosity liquid with catalyst
Shore A Hardness (Cured, 150 °C × 10 min)20 ± 2
Tensile Strength (ASTM D412)≥ 5.0 MPa
Elongation at Break (ASTM D412)≥ 450 %
Density (ASTM D792)1.10–1.14 g/cm³
BiocompatibilityCompliant with ISO 10993-5/-10/-12 and USP Class VI


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