RectorSeal Metacaulk 150+ Firestop Sealant – 20.2 oz, Water-Based, Elastomeric, Fire-Rated Sealant for Joints, Penetrations & Acoustic Smoke Sealing – Pack of 12 with AWF PRO Gloves

Metacaulk 150+ Firestop Sealant is a one-component, water-based elastomeric firestop caulk designed to help prevent the spread of fire, smoke, and hot gases through construction joints and penetration openings. This listing includes a full case of twelve 10.3-ounce red cartridges, making it ideal for contractors, facility maintenance teams, and commercial construction projects requiring consistent fire-rated sealing performance. Formulated for easy application with standard caulking guns, Metacaulk 150+ is a non-sag, paintable sealant that cures to a flexible elastomeric seal capable of accommodating joint movement. It is commonly used in interior wall and floor assemblies including gypsum partitions, concrete walls, block construction, and floor/ceiling assemblies where firestop integrity is critical. The product is also suitable for sealing penetrations such as conduit, power cables, telecom lines, and similar service openings. Tested firestop systems using this sealant can achieve ratings of up to four hours, helping maintain fire barrier integrity while also delivering acoustic sealing performance with an STC rating of 65. Its low VOC (<10 g/L), water-based formulation supports safer indoor application with minimal odor and easy cleanup.

• Helps Maintain Fire Barrier Integrity: Designed to help limit spread of fire smoke and hot gases; supports fire rated joint and penetration sealing; suitable for commercial interior construction applications
• Fire Rated Water Based Sealant: One component elastomeric firestop caulk; low VOC water based formulation; flexible non sag sealant; acoustic sealing capability with high STC rating
• Interior Joint and Penetration Sealing: Applied with standard caulking gun; ideal for gypsum concrete block and floor assemblies; commonly used around conduit cables and service penetrations
• Flexible Durable Elastomeric Seal: Cures to flexible seal allowing joint movement; paintable finish; excellent freeze thaw resistance; long shelf life when stored properly
• Proven Firestop Performance: Tested firestop systems rated up to four hours; third party tested standards compliance; trusted construction firestop solution for professional installations