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

Wacker ELASTOSIL M 4400 Two-Component Silicone Rubber

Wacker ELASTOSIL® M 4400 is a two-component addition-curing silicone rubber offering excellent tear strength, low compression set, and outstanding thermal stability. Ideal for precision molding of medical devices, seals, and technical parts, it cures rapidly at room temperature or with mild heat. Its high biocompatibility complies with ISO 10993 and USP Class VI standards.
  • wacker elastosil m 4400 two component silicone rubber_6b20c9d2
  • wacker elastosil m 4400 two component silicone rubber_6b20c9d2

Features Of Wacker ELASTOSIL M 4400 Two-Component Silicone Rubber

  1. High tear strength and excellent elongation for demanding dynamic applications.

  2. Platinum-catalyzed, addition-cure chemistry ensuring low shrinkage and high dimensional stability.

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

  4. Good flow behavior and low viscosity for reliable mold filling and intricate part replication.

  5. Fast room-temperature or elevated-temperature curing with adjustable pot life via catalyst dosage.

Typical Applications Of Wacker ELASTOSIL M 4400 Two-Component Silicone Rubber

  1. Medical devices including implantable components and wearable sensors.

  2. Pharmaceutical primary packaging such as stoppers and seals for vials and cartridges.

  3. High-precision technical parts for automotive and aerospace sealing systems.

  4. Soft-touch overmolding on plastic and metal substrates in consumer electronics.

  5. Custom silicone elastomer parts requiring reproducible mechanical performance and regulatory traceability.

Specifications Of Wacker ELASTOSIL M 4400 Two-Component Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone rubber
Product FormTwo-component liquid system (Part A + Part B)
AppearanceTransparent to translucent viscous liquids
Primary ApplicationsMedical devices, pharmaceutical packaging, precision technical parts
Key FeaturesBiocompatible, low extractables, high tear resistance, excellent processability
BenefitsRegulatory-ready, consistent batch-to-batch performance, minimal post-cure requirements
Curing MechanismAddition reaction (no by-products)
Storage Stability≥6 months at ≤25 °C (unopened containers)


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