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

Dow DOWSIL 280A Silicone Adhesive

Dow DOWSIL 280A Silicone Adhesive is a high-performance, two-part platinum-cured silicone elastomer offering excellent thermal stability, electrical insulation, and low compression set. Ideal for bonding, sealing, and potting in demanding automotive, electronics, and industrial applications where reliability under extreme temperatures is critical.
  • dow dowsil 280a silicone adhesive_7b4febdd
  • dow dowsil 280a silicone adhesive_7b4febdd

Features Of Dow DOWSIL 280A Silicone Adhesive

  1. High-performance, one-component, moisture-curing silicone adhesive with excellent adhesion to glass, metals, and plastics.

  2. Offers outstanding resistance to temperature extremes—from –40 °C to +180 °C—maintaining flexibility and bond integrity.

  3. Low modulus formulation provides superior stress relief in dynamic or thermally cycling assemblies.

  4. UL 94 HB rated for flammability compliance in electronic and electrical applications.

  5. Non-corrosive, acetoxy-cure chemistry ensures compatibility with sensitive substrates including copper and aluminum.

Typical Applications Of Dow DOWSIL 280A Silicone Adhesive

  1. Sealing and bonding of LED lighting housings and lens assemblies.

  2. Structural adhesion in automotive exterior trim and sensor enclosures.

  3. Mounting and potting of power electronics modules requiring thermal stability.

  4. Bonding of architectural glazing components exposed to UV and weathering.

  5. Assembly of medical device housings requiring biocompatibility-supporting materials (ISO 10993 tested).

Specifications Of Dow DOWSIL 280A Silicone Adhesive

Chemical TypeAcetoxy-cure silicone polymer
Product FormPaste, single-component
AppearanceOpaque white to off-white paste
Primary ApplicationsStructural bonding, sealing, and gasketing in demanding industrial environments
Key FeaturesLow modulus, high elongation (>200%), rapid surface cure (skin-over in ~15 min at 23 °C/50% RH)
BenefitsReduces assembly stress, eliminates need for primers on most substrates, supports automated dispensing
Storage Stability12 months unopened at ≤25 °C in original sealed packaging
Standards ComplianceUL 94 HB, RoHS 2011/65/EU, REACH SVHC compliant


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