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

Dow DOWSIL 7646 Pressure Sensitive Adhesive

Dow DOWSIL 7646 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 cures rapidly via moisture cure, delivers clean die-cutting, and maintains cohesive strength without oozing—ideal for medical tapes, flexible electronics, and high-temp masking applications.
  • dow dowsil 7646 pressure sensitive adhesive_3bf614fa
  • dow dowsil 7646 pressure sensitive adhesive_3bf614fa

Features Of Dow DOWSIL 7646 Pressure Sensitive Adhesive

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

  2. Outstanding thermal stability with continuous service capability from –65 °C to 200 °C.

  3. Low outgassing and minimal volatility, meeting stringent requirements for aerospace and medical device assembly.

  4. Good shear resistance and long-term cohesive integrity under elevated temperature and humidity conditions.

  5. Ready-to-use solvent-free adhesive in roll-good format, compatible with standard high-speed converting equipment.

Typical Applications Of Dow DOWSIL 7646 Pressure Sensitive Adhesive

  1. Aerospace interior bonding — attaching gaskets, insulation blankets, and trim components to composite or aluminum substrates.

  2. Medical device assembly — securing silicone tubing, sensors, and wearable patches requiring biocompatibility and skin-friendly peel characteristics.

  3. High-temperature labeling — durable identification labels for engine compartments, industrial ovens, and power electronics housings.

  4. Flexible electronics — bonding of polyimide flex circuits, heat shields, and EMI shielding tapes in demanding thermal environments.

Specifications Of Dow DOWSIL 7646 Pressure Sensitive Adhesive

Chemical TypeSilicone pressure-sensitive adhesive
Product FormDouble-coated tape (adhesive on both sides of polyester carrier)
AppearanceTranslucent amber film with matte finish
Primary ApplicationsHigh-temperature bonding, aerospace interiors, medical devices, electronics thermal management
Key FeaturesLow surface energy adhesion, thermal stability, low outgassing, solvent-free
BenefitsReduced assembly complexity, no curing required, consistent peel and shear performance across wide temperature range
Storage Conditions25 °C (77 °F), dry, protected from UV light; use within 12 months of manufacture date


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