Using this dryer door seal is easy. First, make sure your dryer is turned off and unplugged. Then, carefully remove the old door seal from the back of the door moulding. Next, press the new seal firmly into the same place. That's it! As for precautions, always check if your dryer model is compatible with this seal before purchasing. If you're not sure, contact us. For maintenance, clean the seal regularly with a mild detergent and a soft cloth. Avoid using harsh chemicals as they may damage the seal. This way, your dryer door seal will last a long time and keep your dryer working well.