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

Dow DOWSIL SS-3551 Silicone

Dow DOWSIL SS-3551 Silicone is a high-performance, platinum-cured liquid silicone rubber (LSR) from Dow’s DOWSIL SS series. It offers excellent flow, low viscosity, rapid cure, and outstanding thermal stability for precision injection molding of medical, automotive, and electronics components.
  • dow dowsil ss 3551 silicone_2ef162e8
  • dow dowsil ss 3551 silicone_2ef162e8

Features Of Dow DOWSIL SS-3551 Silicone

  1. High-performance, one-component, moisture-curing silicone sealant with excellent adhesion to glass, aluminum, and painted surfaces.

  2. Low modulus formulation provides superior flexibility and stress relief in dynamic joints.

  3. Excellent resistance to UV radiation, ozone, and extreme temperature cycling (-40 °C to +150 °C).

  4. Non-corrosive and acetoxy-free chemistry—safe for sensitive substrates including electronics and architectural metals.

  5. Good skin-over time and deep-section cure capability for reliable performance in varied environmental conditions.

Typical Applications Of Dow DOWSIL SS-3551 Silicone

  1. Structural glazing systems in commercial curtain walls and façades.

  2. Weatherproofing of insulating glass units (IGUs) and perimeter sealing of windows and skylights.

  3. Sealing and bonding in transportation applications, including railcar and bus glazing assemblies.

  4. Architectural metal panel joint sealing where movement accommodation and long-term durability are critical.

  5. Industrial enclosures and electronic housings requiring environmental protection without substrate corrosion.

Specifications Of Dow DOWSIL SS-3551 Silicone

Chemical TypeOne-component, acetoxy-cure silicone polymer
Product FormThixotropic paste in cartridge or sausage packaging
AppearanceOpaque white or translucent gel
Primary ApplicationsStructural and non-structural glazing, weathersealing, and industrial bonding
Key FeaturesUV stable, low modulus, non-corrosive, good adhesion without primer on many substrates
Shore A Hardness (7 days, 23°C/50% RH)25–35
Tensile Strength (ASTM C1135)≥0.6 MPa
Joint Movement Capability±25% (Class 25 according to ASTM C920)


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