It is a one-component, general purpose, fire-rated sealant and smoke seal for construction joints and through-penetrations;A water-based, non-sag caulking grade sealant that is easy to apply as well as to retrofit;An economic choice for most common applications;UL Classified

• Rectorseal 66648 10.3-Ounce Cartridge Metacaulk Mc 150+ Firestop Sealant

Rectorseal 66648 10.3-Ounce Cartridge Metacaulk Mc 150+ Firestop SealantThe Rectorseal Corporation