Thomas&Belts SPECIFICATION SHEET CONNECTORS FOR LIQUID TIGHT FLEXIBLE NONMETALLIC CONDUIT AND TUBING BOX OR ENCLOSURE WALL CONDUIT OR TUBING 5262 SERIES SEALING RING (NOT INCLUDED) APPLICATION: A series of metallic connectors designed fo provide a liquid tight seal when terminating liquid tight nonmetallic conduit (U.L. Type B) or liquid tight nonmetallic tubing to a box or enclosure with knockout opening or a threaded hub.