rope seals :

Most modern stoves are now fitted with rope seals around the door openings.
They enable the door to make an air tight seal with the body of the stove. The user can then adjust the stove controls to limit the amount of air entering to vary the burn rate. Therefore, the rope seals need to be replaced when they become damaged or brittle with age.
If the stove door makes a 'metalic' sound as it is shut, it is a sure sign that the door seals need replacing.
You will need the correct length and diameter of rope seal, together with a small bottle of high temperature glue to complete the job.

It is very important to fit the correct diameter rope seal. Too small, and unwanted air will flow into the combustion chamber to make it impossible to control your stove.
Too big, and you run the risk of bursting the door hinges off your stove.

Check your stove handbook to ensure that you obtain the correct diameter.
It is somtimes easier to remove the doors and place them on an old towel on a table top. Clean out the old seal and any other debris.
It is important not to 'stretch' the rope as you glue it into position. Apply a continuous line of glue to the rebate and let the rope 'fall' into position without pulling or pushing it along the rebate of the door.
This method will ensure that you maintain the correct diameter of the rope seal.
Make a clean cut through the rope seal with a sharp blade where the ends meet. You can use end of rope sealing tape if you wish, but it is not mandatory.