Dow -DOWSIL™ 983 Structural Glazing Sealant Base and Curing Agent

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Designed for specialized use where dual structural and weatherseal applications are desired for factory glazing and curtainwall production.


Category: caulking compounds | caulks | elastomeric sealants...

MasterFormat: Joint Protection | Joint Sealants | Glazing...



Dow
Corporate Center
PO Box 994
Midland, MI 48686
Tel: (586) 496-4000

jlmijal@dow.com

https://www.dow.com/en-us.html

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Overview


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.

Uses:
  • Structural and sealing applications for factory glazing and glass curtain wall production
Benefits:
  • Approved for structural and weatherseal applications
  • Meets ASTM C719 Class 25 (G, A, O)
  • Meets ASTM C1184 Structural Glazing Specification
  • Low VOC formula (less than 18 g/L when mixed properly)
  • 20 years structural glazing


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Specifications

Typical Properties

Adhesion to

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

Opaque

Chemistry

Neutral

Cure System

2-Part Cure

Cure Type

Neutral Cure

Durometer - Shore A

43

Elongation

219 %

Flow/Sag (Slump)

< 5.1 mm

Movement

Low

Number of Parts

Two

Primerless Adhesion

Primerless

Specific Gravity

1.38

Specific Gravity @ 25°C

1.38

Substrate

Non-porous

Tear Strength

55 ppi

Tensile Strength

228 psi

Volatile Organic Content

4 g/liter

Where Used

Factory, Job Site

Working Time

20 to 40 Minutes