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

Dow XIAMETER RBB-2070-40 Silicone Rubber

Dow XIAMETER® RBB-2070-40 is a high-consistency silicone rubber (HCR) offering excellent mechanical strength thermal stability and processability for compression or injection molding. Part of Dow’s XIAMETER® portfolio it delivers consistent cure behavior low compression set and broad service temperature range (–60°C to 200°C) ideal for automotive medical and industrial sealing applications.
  • dow xiameter rbb 2070 40 silicone rubber_d8dfb2ba
  • dow xiameter rbb 2070 40 silicone rubber_d8dfb2ba

Features Of Dow XIAMETER RBB-2070-40 Silicone Rubber

  1. High-consistency, two-part addition-cure silicone rubber with excellent processability in compression and transfer molding.

  2. Offers outstanding thermal stability and long-term performance across a wide temperature range (–60 °C to +200 °C).

  3. Low compression set and superior resilience for dynamic sealing and gasketing applications.

  4. Meets ISO 10993-5 and USP Class VI biocompatibility requirements for medical device components.

  5. Excellent electrical insulation properties and resistance to UV, ozone, and weathering.

Typical Applications Of Dow XIAMETER RBB-2070-40 Silicone Rubber

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

  2. Pharmaceutical stoppers and closures requiring extractables and leachables compliance.

  3. Automotive sensors, gaskets, and under-hood sealing parts exposed to elevated temperatures.

  4. Consumer healthcare devices including wearable monitors and skin-contact interfaces.

  5. Industrial seals and diaphragms in food-grade and cleanroom environments.

Specifications Of Dow XIAMETER RBB-2070-40 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone elastomer
Product FormTwo-part liquid system (Part A: base; Part B: catalyst)
AppearanceTranslucent, viscous liquid (Part A); translucent, low-viscosity liquid (Part B)
Shore A Hardness (Cured, 7 days @ 23 °C)40 ± 2
Tensile Strength (ASTM D412)≥ 7.0 MPa
Elongation at Break (ASTM D412)≥ 450 %
Compression Set (22 h @ 175 °C, ASTM D395 Method B)≤ 20 %
BiocompatibilityISO 10993-5 (cytotoxicity), USP Class VI compliant


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