Confined space sealing system and method

An filter locking nut comprising:

• an elongated body extending between a first end and a second end, wherein the first end comprises a first receptacle and wherein the second end comprises a second receptacle including an internal thread configured to removably engage a threaded rod in order to be moved into engagement with a filter element:
• wherein the elongated body comprises an outer wall of the first receptable;
• wherein the first receptable comprises;
• a rectangular opening,
• a circumferential groove formed in an interior wall of the rectangular opening, and
• a circular back end of the square opening,
• wherein the groove is coupled and remains coupled with an elongated tool when the elongated tool is inserted into the first receptable and a movable component of the elongated tool disposed in the groove;
• wherein the groove is uncoupled from the elongated tool when the threaded rod engages the second receptacle and the movable component is undisposed from the groove.