A piece of plate or a shape fitted around an opening for the passage of a continuous member through a deck, bulkhead, or other structure to secure tightness against oil, water, air, dust, etc.
Isijungqu sepleyiti okanye ukumila okufakelwe ngokujikeleze ukuvuleka kwepaseji kwelungu eliqhubeka emgangathweni, icala lenqanawe elingangeni manzi, okanye esinye isakhiwo ukusinqabisa ekungeneni kwe-oyile, amanzi, umoya, uthuli, njalo-njalo.