CRL Bronze Dow Corning® 999-A Silicone Sealant for Building & Glazing

• General purpose silicone glazing sealant for windows, curtainwall, and solar panels
• Easily applied one-part, high-modulus, acetic-cure formula
• Sealant Estimator Chart

CRL Dow Corning 999-A (SKU: 999ABRZ) is a one-part acetic-cure silicone sealant that cures with atmospheric moisture to form a durable, flexible seal for wet glazing and curtainwall applications. Ideal for conventional glazing of glass and plastic, replacement glazing, and sealing around solar panels and metal assemblies.


Basic Uses
Dow Corning 999-A is formulated for building construction glazing—effective for butt and lap shear joints, curtainwall projections, and general construction sealing of glass, plastic, and metal assemblies.

Technical Data
Meets or exceeds Federal Specifications TT-S-001543A (COM-NBS) Class A and TT-S-00230C (COM-NBS) Class A, ASTM C-920, and Canadian CAN2-19.13-M82.

Limitations
Not intended for structural glazing or use on masonry. Refer to the cartridge label and Specification Data Sheet for additional limitations and application guidance.

Comparable Sealants
CRL: 33S. Dap: 100% Silicone. Dow Corning®: 786; 732; 700; Glazing Silicone; General Purpose; Commercial Grade 100%; Tub, Tile and Ceramic, HVAC/R. GE®: 1200 Construction, 1000 Contractors, 1700 Sanitary. Tremco®: Proglaze, Tremsil 200, TremPro 644. OSI: HM-270. Pecora: 860, 863. Sonneborn: OmniPlus. Sika®: SikaSil®-GP.


Product Warning:

Dow Corning 999-A Silicone Building and Glazing Sealant is not intended for structural glazing, or for use on masonry. Check cartridge label and Specification Data Sheet for additional limitations.