Air tight door gasket

[Bricklayer]

Have to re-build the door to my evaporator this summer.
Was wondering what is used for a gasket.
Right now we have the original double arch doors and can basically see the fire right through the cracks.
Going to try to go with a single insulated door.
I’ve seen some pictures on the site of people using the fire blanket as a gasket. But thought that it might get compressed with the constant opening and closing of the door.

[Someclown]

I use SBI black wood stove door gasket from RONA, There are different sizes. The black seem to be of better quality I believe they're double layer
Haven't had a problem on any of my stoves with this gasket

[Pdiamond]

Depending on the type of arch it originally was, I believe some of the manufacturers now make an air tight door you can mount onto the existing arch. I believe I saw that somewhere here on the trader.