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

Dow SILASTIC 3629 Silicone Rubber

Dow SILASTIC 3629 is a high-strength, platinum-cured liquid silicone rubber (LSR) from Dow’s SILASTIC® portfolio. It offers excellent flow, low compression set, and biocompatibility per ISO 10993. Ideal for precision medical components, seals, and wearable devices requiring consistent cure and thermal stability.
  • dow silastic 3629 silicone rubber_a4b053b4
  • dow silastic 3629 silicone rubber_a4b053b4

Features Of Dow SILASTIC 3629 Silicone Rubber

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

  2. Outstanding thermal stability across a wide service temperature range of –60 °C to +200 °C.

  3. Low compression set and superior long-term elastic recovery for dynamic sealing applications.

  4. Excellent electrical insulation properties and resistance to ozone, UV, and weathering.

  5. Meets UL 94 V-0 flammability rating and complies with FDA 21 CFR 177.2600 for food-contact applications.

Typical Applications Of Dow SILASTIC 3629 Silicone Rubber

  1. Automotive under-hood seals, gaskets, and vibration-damping components.

  2. Medical device housings, tubing connectors, and non-implantable elastomeric parts.

  3. Consumer electronics enclosures, button pads, and environmental seals.

  4. Industrial fluid-handling components requiring chemical resistance and thermal durability.

  5. Food processing equipment gaskets and sanitary sealing solutions.

Specifications Of Dow SILASTIC 3629 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone rubber
Product FormTwo-part liquid (Part A: base; Part B: catalyst), supplied separately
AppearanceOpaque, off-white to light beige viscous paste
Primary ApplicationsCompression molding, transfer molding, and extrusion of high-performance elastomeric parts
Key FeaturesLow compression set, high tear strength, excellent dimensional stability
BenefitsReduced post-mold trimming, extended service life in cyclic loading, consistent part-to-part reproducibility
Curing SystemRoom-temperature vulcanization (RTV) or accelerated heat cure (e.g., 150 °C for 5–10 min)
Regulatory ComplianceMeets ASTM D2000, UL 94 V-0, FDA 21 CFR 177.2600, RoHS, and REACH


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