Dow Corning 999-A is intended for building construction applications, and is particularly effective for glazing butt and lap shear joints, sealing curtainwall projections, glass, plastic, and metal assemblies. It is also appropriate for general construction applications.
It meets or exceeds the following specification standards: Federal Specifications TT-S-001543A (COM-NBS) Class A for silicone building sealants, and TT-S-00230C (COM-NBS) Class A for one component building sealants; ASTM C-920; Canadian Specification CAN2-19.13-M82.
Dow Corning 999-A 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.
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.