This is a chance to own a nice, genuine, and vintage, JBL made, rubber O ring sealing gasket for several JBL professional high frequency compression drivers. The gasket mounts on the back side of the tweeter mount and helps seal the escape of any air or sound between the tweeter and the cabinet. This is original JBL made and in good used condition, showing only minor wear. It is not dry rotted. It will be packaged carefully. This is compatible with the 2402, 2405, 075, and 077. This listing is for a single gasket.