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

Wacker E1657 Silicone Emulsion Release Agent

Wacker E1657 is a high-performance silicone emulsion release agent from Wacker’s E series, designed for efficient mold release in rubber, polyurethane and composite manufacturing. It delivers excellent demolding, low migration, stable emulsion integrity and easy water dilution—ensuring consistent surface quality and extended mold life without residue buildup or interference with downstream processes.
  • wacker e1657 silicone emulsion release agent_e3ad636b
  • wacker e1657 silicone emulsion release agent_e3ad636b

Features Of Wacker E1657 Silicone Emulsion Release Agent

  1. High-performance silicone emulsion offering excellent demolding efficiency on complex geometries and textured surfaces.

  2. Water-based formulation with low VOC content, supporting sustainable manufacturing and regulatory compliance.

  3. Stable emulsion with broad pH compatibility (pH 5–9), enabling reliable performance in diverse process conditions.

  4. Leaves minimal residue after curing, ensuring clean part surfaces and reduced post-mold cleaning requirements.

  5. Compatible with common mold materials including steel, aluminum, and coated tooling without causing corrosion or degradation.

Typical Applications Of Wacker E1657 Silicone Emulsion Release Agent

  1. Release agent for polyurethane (PU) foam molding in automotive seating and insulation components.

  2. Demolding aid in rigid PVC and thermoplastic elastomer (TPE) extrusion and injection molding processes.

  3. Surface treatment for concrete precast molds to enhance surface finish and extend mold service life.

  4. Release solution for fiberglass-reinforced polymer (FRP) composites in wind blade and marine applications.

  5. Non-stick coating for rubber calendering and vulcanization tooling in tire and industrial rubber production.

Specifications Of Wacker E1657 Silicone Emulsion Release Agent

Chemical TypeDimethyl silicone emulsion
Product FormAqueous emulsion
AppearanceOpaque white liquid
pH (1% aqueous solution)6.0–7.5
Solids Content (wt %)30–32%
Viscosity (25°C, mPa·s)50–150
Storage Stability≥6 months at 5–30°C (unopened container)
Primary ApplicationsRelease agent for PU, PVC, TPE, FRP, rubber, and concrete molding


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