https://allegro.pl/oferta/zestaw-naprawczy-sznur-bazaltowy-700-c-9mm-17155117435  REPAIR KIT BASED ON BASALT CORD – 700°C  PREMIUM kit for self-replacement of the sealing cord in fireplace, boiler or stove doors.  The set includes:  - basalt cord Ø 9 mm – 2.5 m.b.  - HERMETIC temperature glue – min. 20 ml  - end tape with temperature glue, for the cover of the cord cut.  The thermal adhesive included in the set is resistant to temperatures up to 1100°C.  Setting time: 3 to 8 hours.  Instructions for use of the seal are also included on the packaging.  Available cord diameters: Ø6, Ø8, Ø9, Ø10, Ø12, Ø14 mm.