Abstract: A covering is provided to cover an opening in a surface through which a tubular member extends. The covering includes a base of a predetermined thickness and which is larger in diameter than the tubular member. The base defines an aperture which coincides with a central axis of the base. The base has a medial portion which tapers such that an outer diameter of the medial portion exceeds an inner diameter of the medial portion adjacent to the aperture. The aperture coincides with a central axis of the medial portion. A ring is disposed between the inner diameter of the medial portion and the aperture. A plurality of teeth are arranged circumferentially around the ring away from the medial portion, are spaced from each other and project inward from the medial portion, and are structured to grip the tubular member so as to secure the tubular member in place.