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

Dow XIAMETER SH 746 U Silicone Rubber

Dow XIAMETER SH 746 U is a high-consistency silicone rubber (HCR) from Dow’s XIAMETER portfolio—offering excellent processability, thermal stability up to 200°C, and outstanding mechanical properties. Ideal for extrusion, calendering, and compression molding, it delivers consistent cure performance and low compression set. Widely used in automotive seals, industrial gaskets, and medical tubing requiring biocompatibility per ISO 10993.
  • dow xiameter sh 746 u silicone rubber_4e822a8c
  • dow xiameter sh 746 u silicone rubber_4e822a8c

Features Of Dow XIAMETER SH 746 U 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 –60 °C to +200 °C operating range.

  3. Low compression set and superior mechanical resilience after extended thermal aging.

  4. Excellent electrical insulation properties and UL 94 HB flammability rating.

  5. Good adhesion to various substrates—including metals and engineered plastics—without mandatory priming.

Typical Applications Of Dow XIAMETER SH 746 U Silicone Rubber

  1. Automotive under-hood components such as sensor housings, gaskets, and ignition system seals.

  2. Electrical and electronic encapsulation for power modules, connectors, and high-voltage insulators.

  3. Industrial sealing solutions for pumps, valves, and fluid-handling equipment exposed to temperature cycling.

  4. Medical device components requiring biocompatibility support (ISO 10993-compliant formulation options available).

  5. Consumer appliance parts including thermal interface pads, control panel gaskets, and motor vibration dampers.

Specifications Of Dow XIAMETER SH 746 U Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone rubber
Product FormTwo-part liquid system (Part A: base; Part B: catalyst)
AppearanceTranslucent to slightly hazy viscous liquid (Part A); clear pale yellow liquid (Part B)
Primary ApplicationsHigh-performance molded seals, gaskets, and encapsulants
Key FeaturesLow compression set, high tear strength, excellent thermal aging resistance
BenefitsReduced post-mold trimming, extended service life in dynamic environments, consistent cure profile
Cure SystemAddition cure (no by-products)
Shelf Life (unopened, 25 °C)12 months from date of manufacture


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