DOWSIL™ 983 Structural Glazing Sealant Base and Curing Agent
Designed for specialized use where dual structural and weatherseal applications are desired for factory glazing and curtainwall production. Once cured, this structural sealant forms a durable, flexible, watertight bond that can be warranted for 20 years and used in ±25% movement weatherseal applications. It has excellent unprimed adhesion to glass, alodine, and anodized aluminum1, although DOWSIL™ Primer-C OS is recommended for fast and consistent adhesion, especially to high-performance substrates approved for architectural structural glazing applications.
Properties
These values are typical properties and are not intended for use in preparing specifications.
- Adhesion to Yes No Alodine Aluminum, Aluminum, Anodized Aluminum, Enamelled and Reflective Glass, Fluorocarbon Coated Aluminum, Glass, Heat Strengthened Glass, Low E Coated Glass, Metal, Metal Panels, Paint, Polyester Powder Coated Aluminum/Steel, Stainless Steel
- Appearance Yes No Opaque
- Chemistry Yes No Neutral
- Cure System Yes No 2-Part Cure
- Cure Type Yes No Neutral Cure
- Durometer - Shore A Yes No 43 Shore A
- Elongation Yes No 219 %
- Flow Yes No NonSag
- Flow/Sag (Slump) Yes No < 5.1 mm
- Movement Yes No Low
- Number of Parts Yes No Two
- Primerless Adhesion Yes No Primerless
- Specific Gravity @ 25°C Yes No 1.38
- Substrate Yes No Non-porous
- Tear Strength Yes No 55 ppi
- Tensile Strength Yes No 228 psi
- Volatile Organic Content Yes No 4 g/liter
- Where Used Yes No Factory, Job Site
- Working Time Yes No 20 to 40 Minutes
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