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Air Barriers

323 K-NRG Gap Seal FR™

KARNAK 323 K-NRG Gap Seal FR™ is a fire-resistant building envelope sealant designed to prevent air passage by sealing joints, penetrations and transitions on above-grade wall air barrier assemblies. KARNAK 323 K-NRG Gap Seal FR™ is a single-component, water-based acrylic mastic that cures to a tough monolithic elastomeric-like membrane. This sealant is fully compatible with KARNAK 321 K-NRG Seal VP™ and passes the stringent NFPA 285 Fire Test.

Available Sizes

55 gallon drums

3.5 gallon buckets

30 oz. caulk tubes

Categories
Air Barriers
Advantages
Specifications
Uses
Physical Properties
Preparation & Application
Caution / Care of Tools

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No items found.
Advantages
Specifications
Uses
Physical Properties
Preparation & Application
Caution / Care of Tools

Project Showcase

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