The On/Off sealing connector has the capability to retrieve the production string simply and reliably without disturbing the companion packer below. Its sealing System allows the tubing to be disconnected for fluid circulation while ensuring seal integrity when reconnected. A seating nipple profile is available in the top of the seal nipple to permit plugging of the lower zone while the tubing is removed. Besides the left-hand releasing L-10 version, a right-hand releasing R-10 version is also available enabling remedial or stimulation work above the packer. The plug can then be removed with conventional wireline methods allowing production of the well to resume. The L-316 has all the design features built into the 1-10. but it is designed specifically for CO2 and waterflood applications. It uses 316 Stainless Steel flow path material while maximizing load capacity.