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

Dow DOWSIL EA-4900 RTV Adhesive

Dow DOWSIL EA-4900 RTV Adhesive is a high-performance silicone-based adhesive sealant offering rapid room-temperature vulcanization, excellent adhesion to diverse substrates, and robust resistance to heat, moisture, and aging. Ideal for electronics encapsulation and automotive assembly, it delivers reliable bonding with low stress and superior dielectric properties.
  • dow dowsil ea 4900 rtv adhesive_0ce5101a
  • dow dowsil ea 4900 rtv adhesive_0ce5101a

Features Of Dow DOWSIL EA-4900 RTV Adhesive

  1. Fast-curing, one-component silicone adhesive with room-temperature vulcanization (RTV) chemistry.

  2. Excellent adhesion to challenging substrates including plastics, metals, glass, and painted surfaces without primers.

  3. High flexibility and elongation (>150%) to absorb thermal and mechanical stresses in dynamic assemblies.

  4. UL 94 HB flame retardancy rating for enhanced safety in electronic and electrical enclosures.

  5. Low modulus formulation minimizes stress on delicate components during thermal cycling.

Typical Applications Of Dow DOWSIL EA-4900 RTV Adhesive

  1. Sealing and bonding of LED lighting housings and drivers.

  2. Assembly of automotive sensors, control modules, and infotainment enclosures.

  3. Encapsulation and potting of power electronics and industrial control units.

  4. Structural bonding in consumer electronics where vibration resistance and thermal stability are critical.

Specifications Of Dow DOWSIL EA-4900 RTV Adhesive

Chemical TypeAcetoxy-cure silicone elastomer
Product FormPaste, thixotropic, medium viscosity
AppearanceOpaque white
Primary ApplicationsSealing, bonding, and gasketing in electronics and automotive assemblies
Key FeaturesRoom-temperature cure, primerless adhesion, high elongation, low modulus
BenefitsReduced assembly time, improved reliability under thermal cycling, simplified process design
Cure MechanismMoisture-cure RTV (surface-to-core)
Shelf Life (unopened)12 months at ≤25°C in original sealed container


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