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

Dow SILASTIC RTV-3498 Silicone Rubber

Dow SILASTIC RTV-3498 Silicone Rubber is a two-part, platinum-cured, high-strength elastomer offering excellent thermal stability, low compression set, and superior adhesion to diverse substrates. Ideal for demanding sealing, bonding, and potting applications in aerospace, medical, and electronics industries due to its consistent cure profile and biocompatibility.
  • dow silastic rtv 3498 silicone rubber_066daa60
  • dow silastic rtv 3498 silicone rubber_066daa60

Features Of Dow SILASTIC RTV-3498 Silicone Rubber

  1. Two-part, addition-cure silicone rubber offering excellent thermal stability and low compression set.

  2. High tear strength and elongation for demanding dynamic sealing and vibration-damping applications.

  3. UL 94 HB rated for flammability compliance in electrical and electronic enclosures.

  4. Low viscosity before cure enables easy mixing, degassing, and mold filling with minimal entrapped air.

  5. Shore A hardness of ~40 after full cure provides optimal balance of flexibility and mechanical integrity.

Typical Applications Of Dow SILASTIC RTV-3498 Silicone Rubber

  1. Sealing and potting of power electronics, including inverters, converters, and battery management systems.

  2. Vibration isolation mounts for automotive sensors, control units, and under-hood components.

  3. Encapsulation of LED lighting modules requiring thermal cycling resistance and optical clarity retention.

  4. Soft gasketing for medical device housings where biocompatibility and sterilization compatibility are critical.

Specifications Of Dow SILASTIC RTV-3498 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone rubber
Product FormTwo-component liquid (Part A: base; Part B: catalyst)
AppearanceTranslucent to milky white viscous liquid (Part A); colorless to pale yellow liquid (Part B)
Mix Ratio by Weight10:1 (A:B)
Cure Temperature Range25–150 °C (room temperature cure possible with extended time)
Shore A Hardness (7 days @ 25 °C)40 ± 3
Tensile Strength (ASTM D412)6.5 MPa typical
Elongation at Break (ASTM D412)350% typical


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