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

DOW DOWSIL BY25-320

DOW DOWSIL BY25-320 is a high-performance silicone elastomer base polymer from Dow’s DOWSIL™ portfolio, designed for room-temperature vulcanizing (RTV) silicone rubber applications requiring excellent tear strength, flexibility and thermal stability across wide temperature ranges.
  • dow dowsil by25 320_ac3885bb
  • dow dowsil by25 320_ac3885bb

Features Of DOW DOWSIL BY25-320

  1. High-performance silicone-based release agent offering consistent, non-migrating release performance.

  2. Designed for high-temperature vulcanization (HTV) and liquid silicone rubber (LSR) molding processes.

  3. Leaves minimal residue, supporting excellent surface finish and reducing post-mold cleaning requirements.

  4. Compatible with platinum-cured and peroxide-cured silicone elastomers.

  5. Low-volatility formulation with controlled evaporation rate for uniform film formation.

Typical Applications Of DOW DOWSIL BY25-320

  1. Release coating for molds used in automotive silicone gasket and seal production.

  2. Surface treatment for LSR injection molds in medical device manufacturing.

  3. Release aid in high-precision electronics encapsulation tooling.

  4. Processing aid for silicone rubber extrusion dies and calender rolls.

  5. Non-stick treatment for composite tooling surfaces in aerospace component fabrication.

Specifications Of DOW DOWSIL BY25-320

Chemical TypeOrganosilicone polymer solution
Product FormLiquid concentrate
AppearanceClear, colorless to pale yellow liquid
Primary ApplicationsRelease agent for silicone rubber molding
Key FeaturesNon-migrating, heat-stable, low-residue
Recommended DiluentIsopropyl alcohol or naphtha (for dilution)
Storage ConditionsStore at 15–25°C; protect from freezing and direct sunlight
Shelf Life24 months unopened under recommended storage conditions


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