High-density fiberglass rope seal withstands extreme heat without shrinking or hardening, creating a durable, long-lasting barrier for wood stove and fireplace doors. Available in diameters from 6mm to 20mm, each piece measures 2 meters or 3 meters – simply cut to the required length for a custom-fit gasket on pellet stoves, log burners, and boilers. Soft and flexible braid compresses easily into the door channel, effectively blocking smoke and air leaks to maintain proper draft and improve burn efficiency. Universal fireproof cord replaces worn-out stove door gaskets, ash door seals, and oven seals – suitable for most wood burning stoves, coal stoves, and outdoor heating appliances. Quick installation by pressing into the groove and securing with high-temperature adhesive (not included); a practical maintenance part to extend the life of your heater.