DuraVent FasNSeal Female Flex Adapter: joins the liner’s top to rigid FasNSeal pipe
The DuraVent FasNSeal Female Flex Adapter is the adapter that connects the top of a FasNSeal Flex liner to rigid FasNSeal pipe. You can identify this adapter by its blue gasket. FasNSeal Flex is DuraVent’s flexible stainless steel liner that carries a high efficiency gas appliance’s exhaust up through an existing masonry chimney. The liner is lowered from the chimney top and stays within the masonry, with rigid FasNSeal parts extending from both ends. Its path must be vertical or close to it, not sideways.
Choose a 3, 4, 5, 6, 7, 8, 10, or 12 inch size on this page. A professional makes the liner connection by placing heat resistant silicone sealant in the adapter’s channel, not on the liner itself. The liner slides 1 1/2 to 2 inches into the adapter before the clamp is tightened. The sealant needs 24 hours to cure and is not included. Connecting the bottom end instead? See the DuraVent FasNSeal Male Flex Adapter for the liner’s bottom. The DuraVent FasNSeal Female Flex Adapter ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.








Commercial projects may require custom parts and unique system designs. Duravent offers complete project assistance:








































