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

Dow SILASTIC NPC 9300-70 Silicone Rubber

Dow SILASTIC NPC 9300-70 is a platinum-cured liquid silicone rubber (LSR) offering excellent flow, low viscosity, and high tear strength. Designed for precision molding of medical, automotive, and consumer parts, it delivers consistent cure, biocompatibility per ISO 10993, and outstanding thermal stability up to 200°C. Ideal for automated injection molding systems requiring reproducible, high-clarity elastomeric components.
  • dow silastic npc 9300 70 silicone rubber_d7708b93
  • dow silastic npc 9300 70 silicone rubber_d7708b93

Features Of Dow SILASTIC NPC 9300-70 Silicone Rubber

  1. High consistency and excellent extrudability for precision profile formation.

  2. Platinum-catalyzed, addition-cure chemistry enabling low compression set and minimal post-cure requirements.

  3. Outstanding thermal stability across -60 °C to +200 °C continuous service range.

  4. Excellent electrical insulation properties with stable dielectric performance over temperature and humidity.

  5. Low volatility and compliant with ISO 10993-5 for biocompatibility screening (cytotoxicity).

Typical Applications Of Dow SILASTIC NPC 9300-70 Silicone Rubber

  1. Medical tubing and fluid-handling components for IV systems and diagnostic devices.

  2. Automotive under-hood seals and gaskets requiring long-term thermal and chemical resistance.

  3. Electrical insulation sleeves and cable jacketing in industrial control and energy applications.

  4. Food-contact compliant seals and gaskets for processing equipment (FDA 21 CFR §177.2600 compliant).

  5. Custom extruded profiles for HVAC, lighting, and appliance sealing solutions.

Specifications Of Dow SILASTIC NPC 9300-70 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone rubber
Product FormTwo-part liquid (Part A: base polymer; Part B: platinum catalyst)
AppearanceTranslucent, viscous liquid (Part A); colorless to pale yellow liquid (Part B)
Shore A Hardness (ASTM D2240)70 ± 2
Tensile Strength (ASTM D412)8.5–10.0 MPa
Elongation at Break (ASTM D412)350–450%
Compression Set (ASTM D395, 70 h @ 175 °C)≤15%
Key FeaturesExtrudable, low shrinkage, no by-products during cure


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