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

Dow XIAMETER RBB-6300-70 Silicone Rubber

Dow XIAMETER® RBB-6300-70 is a high-consistency, platinum-cured silicone rubber offering excellent mechanical strength, thermal stability up to 200°C, and low compression set. Ideal for extrusion and compression molding, it delivers consistent cure performance and superior electrical insulation. Part of Dow’s trusted XIAMETER® elastomer portfolio, this grade meets stringent industry standards for medical, automotive, and industrial applications.
  • dow xiameter rbb 6300 70 silicone rubber_fbf29582
  • dow xiameter rbb 6300 70 silicone rubber_fbf29582

Features Of Dow XIAMETER RBB-6300-70 Silicone Rubber

  1. High tear strength and excellent elongation for durable, flexible molded parts.

  2. Fast cure kinetics enabling efficient high-volume production on standard compression or transfer molding equipment.

  3. Consistent batch-to-batch performance with tight control over rheology and vulcanization behavior.

  4. Excellent thermal stability, maintaining mechanical integrity from –60 °C to +200 °C.

  5. Low compression set for long-term sealing and gasketing performance under sustained load.

Typical Applications Of Dow XIAMETER RBB-6300-70 Silicone Rubber

  1. Automotive fluid-handling components including coolant hoses, turbocharger boots, and vacuum lines.

  2. Industrial seals and gaskets for HVAC, pneumatic systems, and process equipment.

  3. Medical device housings and non-implantable elastomeric components requiring ISO 10993-compatibility support.

  4. Consumer appliance parts such as dishwasher door seals, coffee maker gaskets, and oven knobs.

  5. Electrical insulation components including cable jackets, connector boots, and busbar encapsulants.

Specifications Of Dow XIAMETER RBB-6300-70 Silicone Rubber

Chemical TypePlatinum-cured high-consistency silicone rubber (HCR)
Product FormTwo-part compound (Part A: base; Part B: platinum catalyst)
AppearanceOpaque, dough-like consistency; off-white to light tan color
Shore A Hardness (ASTM D2240)70 ± 3
Tensile Strength (ASTM D412)8.5–10.5 MPa
Elongation at Break (ASTM D412)450–600 %
Compression Set (ASTM D395, 22 hrs @ 175 °C)≤ 25 %
Cure Time (170 °C, 5 min)Full physical property development achieved


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