Arlington Cord Connector, Low Profile Oiltight Strain Relief, 1/2 in Trade, Cable Openings: 0.2 to 0.472 in, Nylon/Zinc, Gray, 0.978 in L x 0.978 in W x 1.792 in H Dimensions. Arlington low profile cord connector has a unique grommet with gripping fingers. These connectors have the largest cord range in the industry, so there are fewer items to stock. a liquidtight seal and superior pullout resistance is accomplished by just tightening the nut. a sealing ring is furnished to assure a liquidtight seal when installing in non-threaded openings.