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

Dow SYLGARD 577 Primerless Silicone Adhesive

Dow SYLGARD 577 Primerless Silicone Adhesive is a one-component, addition-cure silicone elastomer offering excellent adhesion to plastics, metals, and glass without primers. It provides low modulus, high elongation, thermal stability from −55°C to 200°C, and UL 94 V-0 flammability rating—ideal for LED encapsulation, sensor bonding, and automotive electronics.
  • dow sylgard 577 primerless silicone adhesive_7a411149
  • dow sylgard 577 primerless silicone adhesive_7a411149

Features Of Dow SYLGARD 577 Primerless Silicone Adhesive

  1. Primerless adhesion to challenging substrates including polypropylene, polyethylene, and painted metals without surface pretreatment.

  2. One-component, moisture-curing silicone formulation enabling simple, low-waste assembly processes.

  3. Excellent resistance to thermal cycling, UV exposure, and long-term environmental aging.

  4. Low modulus elasticity provides stress relief in bonded assemblies subject to vibration or differential thermal expansion.

  5. UL 94 HB flammability rating supports use in regulated electronic and automotive enclosures.

Typical Applications Of Dow SYLGARD 577 Primerless Silicone Adhesive

  1. Automotive lighting assemblies — bonding polycarbonate lenses to PP/PC housings.

  2. Consumer electronics — sealing and attaching bezels, buttons, and decorative trim on plastic enclosures.

  3. Medical device housings — assembling non-sterile external components requiring biocompatibility-compliant materials.

  4. Industrial sensors and control units — environmental sealing of housings exposed to humidity, dust, and temperature fluctuations.

  5. LED lighting modules — attaching heat sinks and optical elements where thermal stability and long-term adhesion are critical.

Specifications Of Dow SYLGARD 577 Primerless Silicone Adhesive

Chemical TypeAcetoxy-cure silicone elastomer
Product FormPaste, thixotropic, single-component
AppearanceOpaque white, uniform consistency
Primary ApplicationsStructural bonding and environmental sealing of plastics and coated metals
Key FeaturesPrimerless adhesion, moisture-curing, low modulus, UL 94 HB rated
BenefitsReduced process steps, improved line efficiency, enhanced durability in outdoor environments
Cure MechanismAtmospheric moisture
Shelf Life (unopened)12 months at ≤25 °C


Get in Touch with ERICW
Let competitive chemical materials go global.

Your Name *

Your Email *

Your Phone

Country

Your Message *