At the heart of the tightness of the fireplace door is the insulating sealing rope.
The photo shows a special glass fiber rope for fireplaces from Tianjin Bohaibay Trading Co., Ltd.
The insulating rope is designed to seal the stove and fireplace door. It is fitted along the contours of the glass or cast iron insert.
The insulation rope prevents carbon monoxide from seeping into the room and reduces heat loss through the fireplace door.
The insulation cords fitted to the cast iron masonry heater hardware doors are made of fiberglass and because they
can withstand heat loads of up to 550 degrees Celsius.
Even under prolonged heat loads, the cord will not deform and no gaps will appear.
When heated, it does not release any substances that are harmful to humans or animals.