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High-performance, one-component, moisture-curing silicone sealant specifically engineered for structural glazing and insulating glass unit (IGU) secondary sealing.
Excellent adhesion to common IGU substrates including annealed and low-E coated glass, aluminum spacers, and anodized aluminum frames without primer.
Superior UV resistance and long-term weatherability, maintaining elasticity and bond integrity under prolonged exposure to sunlight and temperature cycling.
Low modulus formulation ensures stress relaxation and accommodates thermal and mechanical movement in sealed IGUs.
Meets ASTM C1184 and EN 15434 standards for structural silicone sealants used in insulating glass applications.
Secondary edge sealing of double- and triple-glazed insulating glass units (IGUs) in commercial and residential façades.
Bonding and sealing of IGUs to aluminum, stainless steel, and thermally broken framing systems.
Weatherproof perimeter sealing of IGUs installed in curtain walls, window walls, and storefront systems.
Replacement and retrofit sealing of aged or failed IGU edge seals in building renovation projects.
Use in high-humidity and coastal environments where long-term resistance to moisture ingress and salt exposure is critical.
| Chemical Type | Acetoxy-cure silicone polymer |
| Product Form | Thixotropic paste, supplied in 300 mL cartridges and 600 mL sausages |
| Appearance | Off-white to light gray, homogeneous paste |
| Primary Applications | Secondary sealant for insulating glass units (IGUs) |
| Key Features | Primerless adhesion, low modulus, UV stable, ASTM C1184 compliant |
| Shore A Hardness (7 days, 23°C/50% RH) | 20–25 |
| Tensile Strength (ASTM C1135) | ≥0.6 MPa |
| Service Temperature Range | −40°C to +150°C |
Q1: What is the primary application of DOWSIL 3-0117 sealant?
A: DOWSIL 3-0117 is specifically formulated as a structural silicone sealant for insulating glass (IG) units, providing durable secondary edge sealing between the glass panes and spacer system in double- or triple-glazed windows and façades.
Q2: Is DOWSIL 3-0117 compatible with common IG spacers and desiccants?
A: Yes, it exhibits excellent compatibility with aluminum, stainless steel, and composite spacers, as well as with standard molecular sieve and silica gel desiccants used in IG units — without causing adverse chemical interaction or compromising moisture adsorption performance.
Q3: How does DOWSIL 3-0117 perform under long-term UV exposure and thermal cycling?
A: As a high-purity, addition-cure silicone, it offers outstanding resistance to UV radiation, ozone, and repeated thermal expansion/contraction cycles — maintaining elasticity, adhesion, and structural integrity over decades in typical building envelope service conditions.
Q4: Can DOWSIL 3-0117 be used in conjunction with other sealant types in IG unit fabrication?
A: It is designed for use as the secondary seal in dual-seal IG systems, typically applied over a primary butyl seal. Co-application with non-silicone sealants (e.g., polysulfides or polyurethanes) is not recommended unless verified through joint compatibility testing per ASTM C1294 or equivalent protocols.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
