Replacement Gasket Kit for 0.38'' gaskets. This Gasket kit will also replace any 0.5'' fiberglass rope gasket on stoves. It contains 44'' of Fiberglass rope gasket material. Simply lay the gasket in the channel on the door, cut to length and then glue it in with the provided silicone adhesive. Having a good door gasket will make your wood burning stove more efficient and burn cleaner.