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

Dow XIAMETER RBB-2220-70 Silicone Rubber

Dow XIAMETER RBB-2220-70 Silicone Rubber is a high-consistency, platinum-cured elastomer offering excellent mechanical strength, thermal stability up to 200°C, and low compression set. Designed for precision molding in automotive, medical, and industrial applications, it delivers consistent cure behavior, superior tear resistance, and biocompatibility compliant with ISO 10993. Easy processing and reliable performance make it ideal for demanding silicone rubber parts.
  • dow xiameter rbb 2220 70 silicone rubber_c3b389c7
  • dow xiameter rbb 2220 70 silicone rubber_c3b389c7

Features Of Dow XIAMETER RBB-2220-70 Silicone Rubber

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

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

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

  4. Excellent electrical insulation properties and UL 94 HB flame retardancy rating.

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

Typical Applications Of Dow XIAMETER RBB-2220-70 Silicone Rubber

  1. Automotive under-hood seals and gaskets requiring resistance to oil, coolant, and thermal cycling.

  2. Industrial fluid-handling components including pump diaphragms and valve seats.

  3. Electrical enclosures and insulating housings for power distribution equipment.

  4. Medical device components where biocompatibility support (ISO 10993 testing available) and sterilization resistance are critical.

  5. Appliance seals for cooking, HVAC, and white goods operating in elevated temperature environments.

Specifications Of Dow XIAMETER RBB-2220-70 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone elastomer
Product FormTwo-part compound (Part A: base; Part B: catalyst)
AppearanceOpaque, uniform paste (Part A); translucent liquid (Part B)
Shore A Hardness (7 days @ 23 °C)70 ± 3
Tensile Strength (ASTM D412)8.5 MPa min
Elongation at Break (ASTM D412)350% min
Compression Set (22 hrs @ 175 °C, ASTM D395 B)≤25%
Primary ApplicationsSeals, gaskets, diaphragms, and molded insulators


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