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

Dow XIAMETER RBB-2003-70 Silicone Rubber

Dow XIAMETER® RBB-2003-70 is a high-strength, platinum-cured liquid silicone rubber (LSR) offering excellent flow, low viscosity, and rapid cure. Ideal for precision molding of medical devices, seals, and automotive parts, it delivers superior biocompatibility, thermal stability, and mechanical resilience. Part of Dow’s trusted XIAMETER® portfolio, this LSR ensures consistent processing and reliable performance across demanding applications.
  • dow xiameter rbb 2003 70 silicone rubber_2d1b0115
  • dow xiameter rbb 2003 70 silicone rubber_2d1b0115

Features Of Dow XIAMETER RBB-2003-70 Silicone Rubber

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

  2. Good compression set resistance at elevated temperatures up to 150 °C.

  3. Low volatility and minimal extractables, supporting compliance with FDA and USP Class VI requirements.

  4. Consistent rheology and processability in high-speed injection molding and extrusion operations.

  5. Ready-to-use two-part platinum-cured formulation with precise 1:1 mix ratio by weight.

Typical Applications Of Dow XIAMETER RBB-2003-70 Silicone Rubber

  1. Medical device components including tubing, gaskets, and pump diaphragms.

  2. Automotive fluid-handling seals and sensor housings exposed to thermal cycling.

  3. Pharmaceutical processing equipment seals and single-use bioprocessing connectors.

  4. Consumer healthcare products requiring skin-contact compatibility and sterilization resilience.

  5. Industrial food-grade seals and sanitary fittings compliant with 3-A standards.

Specifications Of Dow XIAMETER RBB-2003-70 Silicone Rubber

Chemical TypePlatinum-cured high-consistency silicone rubber (HCR)
Product FormTwo-component liquid system (Part A + Part B)
AppearanceOpaque, off-white paste (Part A); translucent, off-white paste (Part B)
Primary ApplicationsMedical, pharmaceutical, food & beverage, and automotive sealing
Key FeaturesLow compression set, high tear strength, FDA-compliant base polymer
BenefitsReduced part deformation after prolonged compression; consistent cycle times in automated molding
Curing SystemPlatinum-based addition cure
Shelf Life12 months unopened at ≤25 °C


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