Dow Corning 983 Structural Glazing Sealant

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Dow Corning® 983 Structural Glazing Sealant is a two-part, neutralcure, RTV silicone sealant.

Product Features

  • Approved for structural and weather seal applications1

  • 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)


Dow Corning® 983 Structural Glazing Sealant is 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 aluminum2 , although Dow Corning® Primer C OS is recommended for fast and consistent adhesion, especially to Kynar® and other high-performance substrates approved for architectural structural glazing applications.