methods and systems for plugging a hole are described . a plug may comprise a substantially tubular member having a proximal end and a distal end interconnected by a side wall , the side wall having an inward facing surface and an outward facing surface , at least the outward facing surface being substantially conformable , an adhesive disposed on the outward facing surface , a fire - resistant ring disposed substantially at one of the ends of the tubular member , and a thread disposed along the inward facing surface , the thread adapted to receive a cover .