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

Dow SILASTIC HV 1551-55P Silicone Rubber

Dow SILASTIC HV 1551-55P is a high-consistency, platinum-cured silicone rubber from Dow’s SILASTIC HV series—designed for precision molding, excellent tear strength, thermal stability (–60°C to 200°C), and biocompatibility per ISO 10993. Ideal for medical devices, seals, and automotive components requiring reproducible performance and low compression set.
  • dow silastic hv 1551 55p silicone rubber_a6272b5e
  • dow silastic hv 1551 55p silicone rubber_a6272b5e

Features Of Dow SILASTIC HV 1551-55P 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 dynamic gasket applications.

  4. Excellent electrical insulation properties and UL 94 V-0 flammability rating (when compounded appropriately).

  5. Good adhesion to various substrates including metals, plastics, and other silicones—enabling reliable bonding without primers in many cases.

Typical Applications Of Dow SILASTIC HV 1551-55P Silicone Rubber

  1. Automotive under-hood components such as sensor housings, ignition boots, and fluid-resistant seals.

  2. Electrical and electronic enclosures requiring high dielectric strength and environmental resistance.

  3. Industrial gaskets and dynamic seals exposed to thermal cycling, vibration, and chemical exposure.

  4. Medical device components where biocompatibility (per ISO 10993-5/-10) and sterilization resistance are required.

  5. Aerospace fluid system seals and vibration-damping mounts compliant with low outgassing specifications.

Specifications Of Dow SILASTIC HV 1551-55P Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone rubber
Product FormTwo-part liquid system (Part A: base; Part B: catalyst)
AppearanceOpaque, off-white to light beige viscous paste (Part A); translucent amber liquid (Part B)
Primary ApplicationsCompression molding, transfer molding, and extrusion of high-performance elastomeric parts
Key FeaturesHigh tear strength, low compression set, excellent aging resistance
BenefitsReduced post-cure requirements, consistent batch-to-batch reproducibility, minimal volatile emissions
Curing SystemPlatinum-based addition cure (inhibitor-free or low-inhibition formulation)
Shelf Life12 months at ≤25 °C (unopened, original packaging)


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