Dow Corning 121 Structural Glazing Sealant

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Dow CorningĀ® 121 Structural Glazing Sealant is a fast-curing structural silicone sealant for use in structural and weatherseal applications.

Product Features

  • Approved for structural and weatherseal applications

  • Primerless adhesion to glass, alodine and anodized aluminum

  • Adhesion to Dow CorningĀ® brand structural sealants for reglazing applications

  • Adhesion and structural strength achieved in 24-48 hours

  • Meets ASTM C719 Class 25 (G, A, O)

  • Meets ASTM C1184 Stru


  • Repair and/or replacement of structurally glazed glass and other substrates where a fast cure is required 

  • On-site structural glazing, including storefront systems

  • Attachment of panel stiffeners where quick cure is required

  • In-shop structural glazing where the use of a two-part pump is not viable