Description
Boss 535 Multi-Purpose Polyurethane Adhesive Sealant — 10 oz Caulking Cartridge
A professional-grade polyurethane sealant engineered for high-movement joints and demanding job site conditions. Boss 535 bonds aggressively to metal, wood, masonry, glass, and most substrates — curing to a tough, flexible seal that won't crack, shrink, or pull away under pressure. Widely used for perimeter flashing, metal roofing joints, HVAC penetrations, and structural caulking.
- Polyurethane formula — stronger and more flexible than silicone or latex
- Bonds to metal, wood, concrete, masonry, glass, and most plastics
- Paintable after cure
- UV and weather resistant
- 10 oz cartridge fits standard caulk guns
- Available in: Black, Gray, Limestone, Medium Bronze, Redwood Tan, Special Bronze, Tan, White