CRL Dow Corning® Black Glazing Silicone Sealant for Windows & Glass

• Excellent adhesion to most common building substrates
• Superior weatherability and UV resistance

Dow Corning® Glazing Silicone Sealant (SKU: DC1BL) is a professional‑quality, acetic‑cure silicone formulated for glass shop glazing and general glazing projects. It creates a long‑lasting, water‑resistant seal with ±25% movement capability when properly applied—ideal for high‑movement joints in windows, skylights, and storefronts.


Basic Uses
Designed for glazing, back‑lite replacement, skylights, and repair of weatherstripping and gaskets. The adhesion‑promoted formulation bonds to most glass, plastics, metal, repainted surfaces, fiberglass, ceramics, and aluminum, while extended working time helps deliver a professional finish. Use where a UV‑resistant, waterproof silicone sealant is required.

Technical Data
Meets or exceeds: Federal Specifications TT‑S‑001543A Class A and TT‑S‑00230C Class A; ASTM C‑920; Canadian CAN2‑19.13‑M82.

Limitations
Not intended for structural glazing or masonry. See cartridge label and Specification Data Sheet for full limitations.

Comparable Sealants
CRL: 33S. Dap: 100% Silicone. Dow Corning®: 999‑A; 786; 732; 700; 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:
Not for structural glazing. Check cartridge label and Specification Data Sheet for additional limitations.

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