The door seal on your oven prevents heat loss. It also stops smoke and odours escaping from the interior of your appliance.
Are you finding that the door on your oven will no longer close properly, or perhaps not at all even? The door seal could be the cause.
Over time, oven door seals can end up getting split, torn or perforated. Seals can also lose their air-tightness, in which case you'll be able to feel heat escaping from around the oven door.
To remedy this situation, order a new door seal for your oven. Large number of models available!