MBS - sealing cord 10 mm, round, for doors of smaller stoves and under hobs

MBS - sealing cord only for doors of larger MBS stoves and under hobs. Price is for 1cm.
Size: 10 mm

MBS stove type:
MAGNUM / THERMO MAGNUM
ROYAL 720/900 / THERMO ROYAL
MBS 9 and models marked "E"
MBS TREND

How to calculate the exact length?
If you are not sure, the easiest method is:
Measure the circumference: Measure the lengths of the sides of the door with a tape measure and calculate the perimeter of the rectangle O = 2x(a+b) add 10 - 15 cm as a reserve for blending the ends and possible errors. We recommend JOTUL or La Nordica brand glue for sealing.