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

Dow XIAMETER RBB-2070-50 Silicone Rubber

Dow XIAMETER® RBB-2070-50 is a high-consistency silicone rubber (HCR) offering excellent mechanical strength, thermal stability, and compression set resistance. Designed for injection molding and extrusion, it delivers consistent cure behavior, low volatility, and FDA-compliant biocompatibility—ideal for medical tubing, seals, and automotive components requiring long-term reliability and precision processing.
  • dow xiameter rbb 2070 50 silicone rubber_511857e0
  • dow xiameter rbb 2070 50 silicone rubber_511857e0

Features Of Dow XIAMETER RBB-2070-50 Silicone Rubber

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

  2. Outstanding resistance to compression set, ensuring long-term sealing integrity at elevated temperatures.

  3. Good processability with low viscosity before cure, enabling efficient injection molding and extrusion.

  4. Meets UL 94 V-0 flammability rating for enhanced safety in electrical and electronic assemblies.

  5. Biocompatibility support per ISO 10993-5 and USP Class VI testing for medical device component use.

Typical Applications Of Dow XIAMETER RBB-2070-50 Silicone Rubber

  1. Automotive under-hood gaskets and sensor housings requiring thermal stability and fluid resistance.

  2. Medical tubing connectors and implantable device seals where biocompatibility and reliability are critical.

  3. Consumer electronics enclosures and waterproof seals for wearables and portable devices.

  4. Industrial fluid handling components exposed to ozone, UV, and wide temperature fluctuations.

  5. LED lighting modules requiring optical clarity, thermal management, and long-term dimensional stability.

Specifications Of Dow XIAMETER RBB-2070-50 Silicone Rubber

Chemical TypePlatinum-cured high-consistency silicone rubber (HCR)
Product FormUncured compound in standard 20 kg slabs or custom preforms
AppearanceOpaque off-white to light tan, uniform elastomeric sheet
Shore A Hardness (ASTM D2240)50 ± 3
Tensile Strength (ASTM D412)≥ 7.0 MPa
Elongation at Break (ASTM D412)≥ 550 %
Compression Set (22 h @ 175 °C, ASTM D395 B)≤ 25 %
Curing SystemPt-catalyzed addition cure; no by-products formed


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