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

Dow XIAMETER RBB-6650-50 Silicone Rubber

Dow XIAMETER® RBB-6650-50 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 superior processability across automotive medical and industrial applications.
  • dow xiameter rbb 6650 50 silicone rubber_549aa45d
  • dow xiameter rbb 6650 50 silicone rubber_549aa45d

Features Of Dow XIAMETER RBB-6650-50 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 -60 °C to 200 °C operating range.

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

  4. Meets UL 94 HB flammability requirements and complies with FDA CFR 177.2350 for indirect food contact.

  5. Consistent batch-to-batch reproducibility and optimized for high-volume industrial manufacturing.

Typical Applications Of Dow XIAMETER RBB-6650-50 Silicone Rubber

  1. Automotive engine and transmission gaskets requiring heat resistance and oil resistance.

  2. Industrial fluid-handling seals exposed to aggressive media including coolants and hydraulic fluids.

  3. Appliance door seals for ovens, dishwashers, and laundry equipment.

  4. Medical device housings and non-implantable components where biocompatibility and sterilization resistance are critical.

  5. Electrical insulation components for power distribution systems and EV battery enclosures.

Specifications Of Dow XIAMETER RBB-6650-50 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone rubber
Product FormTwo-part (Part A: base polymer; Part B: curing agent)
AppearanceOpaque, off-white to light gray compound (Part A); translucent amber liquid (Part B)
Shore A Hardness (ASTM D2240, 7 days @ 23 °C)50 ± 3
Tensile Strength (ASTM D412)8.5 MPa (min)
Elongation at Break (ASTM D412)350% (min)
Compression Set (ASTM D395, Method B, 22 h @ 175 °C)≤25%
Key FeaturesExcellent flow control, low viscosity before cure, minimal by-product formation


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