I have a whirlpool dryer, model: ler3624jq0 Recently the dryer belt snapped. I found a melted piece of plastic which I identified as the pulley motor. My current plan is to just order both of these parts and install them. However I also found a strange green ring that may have snapped or may not have, lying on the bottom of the inside of the dryer encircling the whole pulley system. I'm not sure if it has something to do with the snapped belt, where it came from, or what its purpose is. 3 images attached. Any thoughts? Thanks.