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

Dow DOWSIL Q3-3559 Plus EU Semiflowable Acetoxy Silicone Elastomer

Dow DOWSIL Q3-3559 Plus EU is a semiflowable acetoxy-cure silicone elastomer offering excellent adhesion to diverse substrates, low modulus, and high elongation. Designed for precision dispensing in automotive, electronics, and industrial assembly, it cures rapidly at room temperature with acetic acid byproduct. Meets EU regulatory requirements and delivers consistent performance in demanding sealing and bonding applications.
  • dow dowsil q3 3559 plus eu semiflowable acetoxy silicone elastomer_ea4cdbb4
  • dow dowsil q3 3559 plus eu semiflowable acetoxy silicone elastomer_ea4cdbb4

Features Of Dow DOWSIL Q3-3559 Plus EU Semiflowable Acetoxy Silicone Elastomer

  1. Acetoxy-cured silicone elastomer offering rapid room-temperature vulcanization (RTV) with low odor and minimal by-product evolution.

  2. Semi-flowable rheology enables easy dispensing, gap-filling, and conformal coverage without sagging or slumping.

  3. Excellent adhesion to common substrates including glass, aluminum, painted metals, and many plastics—without primer.

  4. Outstanding resistance to UV radiation, ozone, and weathering for long-term outdoor performance.

  5. Compliant with EU REACH and RoHS directives; formulated without intentionally added SVHCs or restricted phthalates.

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

  1. Sealing and bonding of architectural glazing systems in curtain walls and façade assemblies.

  2. Edge sealing and potting of LED lighting modules requiring thermal stability and optical clarity retention.

  3. Gasketing and vibration-damping in automotive interior trim and electronic control units.

  4. Encapsulation of sensors and power electronics exposed to variable temperature and humidity cycles.

  5. Assembly bonding of solar panel frame components and junction box interfaces.

Specifications Of Dow DOWSIL Q3-3559 Plus EU Semiflowable Acetoxy Silicone Elastomer

Chemical TypeAcetoxy-cured polydimethylsiloxane (PDMS) elastomer
Product FormSemi-flowable paste, single-component
AppearanceOpaque off-white to light beige paste
Primary ApplicationsStructural sealing, bonding, gasketing, and encapsulation
Key FeaturesRTV cure, primerless adhesion, UV/ozone resistance, EU regulatory compliance
Shelf Life12 months unopened at ≤25 °C in original sealed packaging
Vulcanization SpeedSurface tack-free in ~15–30 minutes; full cure depth ~3 mm/day at 23 °C/50% RH
Storage ConditionsStore in cool, dry place; avoid freezing and direct sunlight


Get in Touch with ERICW
Let competitive chemical materials go global.

Your Name *

Your Email *

Your Phone

Country

Your Message *