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

Dow DOWSIL 7657 Adhesive

Dow DOWSIL 7657 Adhesive is a high-performance silicone-based structural adhesive in the DOWSIL series, engineered for durable bonding of glass, metal, and plastics. It offers rapid tack-free time, excellent UV resistance, and outstanding adhesion without primers—ideal for architectural glazing and automotive applications.
  • dow dowsil 7657 adhesive_6f1767bb
  • dow dowsil 7657 adhesive_6f1767bb

Features Of Dow DOWSIL 7657 Adhesive

  1. High-performance silicone adhesive offering excellent adhesion to diverse substrates including metals, plastics, and glass.

  2. Room-temperature vulcanizing (RTV) formulation enables rapid cure without heat or moisture activation.

  3. Outstanding resistance to thermal cycling, UV exposure, and weathering for long-term reliability in outdoor applications.

  4. Low modulus elasticity accommodates thermal expansion and mechanical stress without cracking or delamination.

  5. UL 94 HB rated for flame resistance, supporting compliance in regulated electronic and automotive assemblies.

Typical Applications Of Dow DOWSIL 7657 Adhesive

  1. Automotive lighting assembly—including headlamp and tail lamp bonding and sealing.

  2. Electronics encapsulation and potting for sensors, connectors, and power modules.

  3. Architectural glazing and structural bonding of façade components.

  4. Industrial appliance assembly requiring durable, flexible, and weather-resistant adhesion.

  5. LED module mounting and thermal interface bonding in high-reliability lighting systems.

Specifications Of Dow DOWSIL 7657 Adhesive

Chemical TypeCondensation-cure silicone adhesive
Product FormThixotropic paste, one-component
AppearanceOpaque white to off-white
Primary ApplicationsBonding, sealing, and potting in automotive, electronics, and construction
Key FeaturesRTV cure, low modulus, UV stable, UL 94 HB rated
Shelf Life12 months at 25°C in unopened original packaging
Cure Time (Surface Dry)~30–60 minutes at 23°C/50% RH
Full Cure Time~7 days at 23°C/50% RH


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