I had the same problem. Yes, you can remove the door and replace the "seal tape" part. You have to remove the vent on the top before you can remove the door though.
Sharp Microwave Oven R-930AK 900 Please help me find the manual for Sharp R-930AK 900 Microwave Oven Please help me find the manual for Sharp R-930AK 900 Microwave Oven