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

Dow XIAMETER RBB-2420-70 Silicone Rubber

Dow XIAMETER RBB-2420-70 is a high-consistency silicone rubber (HCR) offering excellent mechanical strength thermal stability and compression set resistance ideal for automotive medical and industrial molding applications featuring fast cure kinetics and consistent batch-to-batch performance across global production facilities.
  • dow xiameter rbb 2420 70 silicone rubber_b75d3560
  • dow xiameter rbb 2420 70 silicone rubber_b75d3560

Features Of Dow XIAMETER RBB-2420-70 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 a wide temperature range (–60 °C to +200 °C).

  3. Low compression set ensures reliable sealing and resilience after prolonged deformation or elevated-temperature exposure.

  4. Meets UL 94 V-0 flammability requirements, supporting safety-critical electrical and electronic applications.

  5. Excellent electrical insulation properties with stable dielectric strength and volume resistivity over time and temperature.

Typical Applications Of Dow XIAMETER RBB-2420-70 Silicone Rubber

  1. Sealing and gasketing components for automotive powertrain and EV battery systems.

  2. Insulating housings and protective covers for high-voltage connectors and charging infrastructure.

  3. Thermal interface materials and vibration-damping pads in industrial electronics and power modules.

  4. Molded parts for medical device enclosures requiring biocompatibility support (ISO 10993-tested base formulation).

  5. Weather-resistant encapsulation for outdoor LED lighting and photovoltaic junction boxes.

Specifications Of Dow XIAMETER RBB-2420-70 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone rubber
Product FormTwo-part (Part A: base polymer; Part B: platinum catalyst)
AppearanceOpaque, off-white to light gray viscous paste (Part A); translucent amber liquid (Part B)
Primary ApplicationsElectrical insulation, thermal management, environmental sealing
Key FeaturesLow compression set, UL 94 V-0 rated, high thermal stability
BenefitsConsistent mold fill, minimal post-cure shrinkage, long service life under cyclic stress
Curing SystemAddition cure (hydrosilylation), no by-products
Shelf Life12 months at ≤25 °C, unopened


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