Elgen's UL 723 listed 440 Butyl Gasket is a high quality gray butyl gasket tape. It is designed for use with 4 bolt duct connection systems. It is non-curing and adheres extremely well to metal surfaces.
Butyl Gasket 3/16" X 5/8" X 25' (Box of 500') EG0810
- 3/16" x 5/8" x 25' of gray butyl tape extruded onto smooth silicone release paper and rolled onto a cardboard core.