Dow Corning® 121 Structural Glazing Sealant


Dow Corning® 121 Structural Glazing sealant is a neutral-cure, room temperature vulcanization (RTV) silicone sealant ideal for repair or replacement of structurally glazed glass and other substrates. It is equally suitable for on-site structural glazing – including storefront systems or attachment of panel stiffeners – as it is for in-shop structural glazing.

Dow Corning® 121 has a mix ratio of 1-to-1 (“121”) where the base and the catalyst is supplied in a two-part cartridge complete with a static mixer. Whether for repair, restoration or new construction, contractors will appreciate this simplified solution that both eliminates the need for specialized pumps and mixing equipment and minimizes quality assurance issues.

Furthermore, Dow Corning 121 Structural Glazing Sealant offers increased efficiency and productivity as compared to one part sealants that has long curing time.

  • Repairs can be completed in one day compared with 14-21 days.
  • Swing stage rental is reduced from one month to two days.