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

Dow DOWSIL 7647 Pressure Sensitive Adhesive

Dow DOWSIL 7647 is a high-performance silicone pressure-sensitive adhesive in the DOWSIL™ series, offering excellent adhesion to low-surface-energy substrates, thermal stability up to 200°C, and consistent tack across wide temperature ranges. It enables durable bonding for medical devices, electronics assembly, and specialty tapes without solvent or curing delays.
  • dow dowsil 7647 pressure sensitive adhesive_a81aeb2e
  • dow dowsil 7647 pressure sensitive adhesive_a81aeb2e

Features Of Dow DOWSIL 7647 Pressure Sensitive Adhesive

  1. High-performance silicone-based formulation offering excellent adhesion to low-surface-energy substrates including fluoropolymers and siliconized release liners.

  2. Outstanding thermal stability with continuous service capability up to 200 °C and short-term resistance to 250 °C.

  3. Consistent pressure-sensitive tack and clean debonding behavior across wide temperature and humidity ranges.

  4. Low extractables and minimal outgassing — suitable for demanding electronics, medical device, and aerospace assembly environments.

  5. Compatible with solvent-based and UV-curable coating processes; enables high-speed roll-to-roll conversion.

Typical Applications Of Dow DOWSIL 7647 Pressure Sensitive Adhesive

  1. Flexible printed circuit (FPC) bonding and shielding tapes in consumer electronics.

  2. High-temperature masking tapes for powder coating and automotive paint bake operations.

  3. Thermal interface materials (TIM) attachment layers in LED lighting and power electronics modules.

  4. Medical-grade sensor fixation tapes requiring biocompatibility and skin-friendly peel performance.

  5. Aerospace interior trim bonding where flame, smoke, and toxicity (FST) compliance is critical.

Specifications Of Dow DOWSIL 7647 Pressure Sensitive Adhesive

Chemical TypeHigh-purity addition-cure silicone polymer
Product FormSolvent-based adhesive solution (typically supplied in toluene/ethyl acetate blend)
AppearanceClear to slightly amber viscous liquid
Primary ApplicationsHigh-temperature PSA tapes, thermal management bonding, electronics assembly
Key FeaturesLow surface energy adhesion, thermal resilience, low extractables, clean removal
BenefitsReduces delamination risk in thermal cycling, supports ISO 10993-compliant processing, enables high-yield converting
Storage ConditionsStore at 15–25 °C in sealed containers; protect from moisture and direct sunlight
Shelf Life12 months from date of manufacture when stored under recommended conditions


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