Rectorseal 66616 Intumescent Firestop Sealant; 10.3 oz Cartridge

Detailed Description: Rectorseal 350i Intumescent firestop sealant is a general purpose fire-rated sealant and smoke seal for construction joints. It is an intumescent water-based, non-sag caulking grade sealant that is easy to apply and perfect for retrofits. It cures to an elastomeric seal that is suitable where dynamic movement is expected. Sealant has sound transmission classis rating of 53 and is tested in a UL 411 wall assembly/section to ASTM E90.