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

Wacker ELASTOSIL RT 774 Two-Component Silicone Rubber

Wacker ELASTOSIL RT 774 is a two-component addition-curing silicone rubber renowned for excellent tear strength, low compression set, and outstanding thermal stability. Ideal for precision molding of seals, gaskets, and medical components, it offers fast demolding, high biocompatibility (ISO 10993), and consistent reproducibility across industrial applications.
  • wacker elastosil rt 774 two component silicone rubber_ca145925
  • wacker elastosil rt 774 two component silicone rubber_ca145925

Features Of Wacker ELASTOSIL RT 774 Two-Component Silicone Rubber

  1. High tear strength and excellent elongation at break for demanding mechanical performance.

  2. Fast room-temperature curing without heat activation, enabling efficient production cycles.

  3. Outstanding thermal stability across a wide operating temperature range (–60 °C to +200 °C).

  4. Low compression set ensures long-term sealing integrity and shape recovery.

  5. Biocompatibility tested per ISO 10993-5 and USP Class VI, suitable for medical device applications.

Typical Applications Of Wacker ELASTOSIL RT 774 Two-Component Silicone Rubber

  1. Medical tubing and fluid-handling components in diagnostic and therapeutic devices.

  2. Seals and gaskets for pharmaceutical processing equipment requiring cleanroom compatibility.

  3. Soft-touch overmolding on plastic or metal substrates in healthcare and consumer electronics.

  4. Prototyping and low-volume production of elastomeric parts via vacuum casting or injection molding.

  5. Encapsulation of sensitive electronic sensors exposed to harsh environmental conditions.

Specifications Of Wacker ELASTOSIL RT 774 Two-Component Silicone Rubber

Chemical TypePlatinum-cured addition-cure silicone rubber
Product FormTwo-component liquid system (Part A + Part B)
AppearanceTranslucent, low-viscosity liquids
Mixing Ratio (by weight)1:1
Curing Time (RT, 23 °C)~24 hours to full cure; surface tack-free in ~4–6 hours
Hardness (Shore A, cured)70 ± 3
Tensile Strength (cured)8.5–10.5 MPa
Elongation at Break (cured)≥250 %


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