![Storm Collar for 8" Inner Diameter Chimney Pipe](http://allfuelhst.com/cdn/shop/products/AF-HST6-SC-1_35a8ffed-edd3-4126-84e4-66ece586125a_{width}x.jpg?v=1610987112)
The storm collar works together with the Roof Flashing to provide a waterproof seal where the chimney passes through the roof.
The storm collar is installed directly above the flashing and must be sealed to the chimney pipe using high-temperature silicone sealant (RTV 500F or better), sold separately.