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

Dow DOWSIL Q3-3559 Plus EU Semiflowable Acetoxy

Dow DOWSIL Q3-3559 Plus EU Semiflowable Acetoxy is a high-performance silicone sealant designed for demanding industrial bonding and sealing. Featuring acetoxy cure chemistry, it offers rapid tack-free time, excellent adhesion to metals and plastics, low modulus, and EU-compliant formulation. Ideal for automotive, electronics, and appliance assembly where semiflowable rheology and reliable room-temperature cure are critical.
  • dow dowsil q3 3559 plus eu semiflowable acetoxy_1296be9d
  • dow dowsil q3 3559 plus eu semiflowable acetoxy_1296be9d

Features Of Dow DOWSIL Q3-3559 Plus EU Semiflowable Acetoxy

  1. High-performance acetoxy-cure silicone sealant with semiflowable rheology for precise, low-sag application.

  2. Excellent adhesion to common construction substrates including glass, aluminum, anodized metals, and painted surfaces without primer.

  3. Fast skin-over and cure rate under ambient conditions, enabling rapid handling and reduced production cycle times.

  4. Complies with EU Construction Products Regulation (CPR) and meets EN 15657:2017 requirements for structural glazing sealants.

  5. Low modulus formulation provides superior joint movement capability (±25% movement accommodation) and long-term elasticity.

Typical Applications Of Dow DOWSIL Q3-3559 Plus EU Semiflowable Acetoxy

  1. Structural and secondary glazing in commercial façades and curtain wall systems.

  2. Sealing and bonding of insulating glass units (IGUs) for architectural and automotive applications.

  3. Edge sealing of laminated safety glass and spandrel panels.

  4. Weatherproofing of metal and composite building cladding joints.

  5. General-purpose bonding and sealing in precision industrial assembly where controlled flow and high green strength are required.

Specifications Of Dow DOWSIL Q3-3559 Plus EU Semiflowable Acetoxy

Chemical TypeAcetoxy-cure silicone polymer
Product FormSemiflowable paste, single-component
AppearanceOpaque, off-white to light beige paste
Primary ApplicationsStructural glazing, IGU edge sealing, façade joint sealing
Key FeaturesLow-sag, fast skin-over, primerless adhesion, EU CPR-compliant
BenefitsImproved productivity, reduced labor dependency, consistent bond reliability
Shelf Life12 months from date of manufacture when stored unopened at ≤25°C
Standard Packaging300 mL sausage cartridge, 600 mL sausage cartridge


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