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

Dow SILASTIC SE 4704 U Silicone Rubber

Dow SILASTIC SE 4704 U is a high-strength, addition-cure liquid silicone rubber designed for precision molding of medical and optical components. It offers excellent flow, low viscosity, fast cure speed, and outstanding biocompatibility per ISO 10993. Ideal for overmolding, encapsulation, and thin-wall applications requiring clarity and thermal stability.
  • dow silastic se 4704 u silicone rubber_e17eeb75
  • dow silastic se 4704 u silicone rubber_e17eeb75

Features Of Dow SILASTIC SE 4704 U Silicone Rubber

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

  2. UL 94 V-0 rated for flame retardancy, supporting stringent safety requirements in electrical and electronic applications.

  3. Outstanding thermal stability, maintaining mechanical integrity from –60 °C to +200 °C long-term.

  4. Low compression set and high elasticity for reliable sealing and gasketing performance over extended service life.

  5. Excellent electrical insulation properties with stable dielectric strength across wide temperature and humidity ranges.

Typical Applications Of Dow SILASTIC SE 4704 U Silicone Rubber

  1. High-voltage insulators and bushings for power transmission equipment.

  2. Sealing gaskets for LED lighting housings requiring thermal management and environmental protection.

  3. Encapsulants and potting compounds for automotive sensors and control modules.

  4. Medical device components where biocompatibility (ISO 10993-compliant) and sterilization resistance are critical.

  5. Industrial automation housings exposed to ozone, UV, and chemical vapors.

Specifications Of Dow SILASTIC SE 4704 U Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone elastomer
Product FormTwo-part liquid (Part A: base; Part B: catalyst)
AppearanceOpaque off-white viscous liquid (Part A); translucent light-yellow liquid (Part B)
Shore A Hardness (ASTM D2240)40 ± 3
Tensile Strength (ASTM D412)6.5 MPa minimum
Elongation at Break (ASTM D412)350% minimum
Volume Resistivity (ASTM D257)≥1 × 10¹⁵ Ω·cm
UL RecognitionUL 94 V-0, UL 746C (RTI Elec/Imm: 180 °C)


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