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Wellhead stuffing box SUPk 2-73-31

SUPk 2-73-31

Wellhead stuffing box SU PK 2-73 is designed to seal the stuffing box rod of wells operated by sucker rod pumps.


Distinctive features of this design of the wellhead seal are the use of rubber-fabric cuffs with an increased operating life, the presence of a spherical pivot and an anti-blowout valve, which allows:

compensate for the misalignment of the wellhead and the gland rod hanger within the circular coordinate + – 50 mm.

prevent accidental blowout from the well in case of piston.

СУпк 2-73-31
Манжета резинотканевая СУпк 2-73-31 Схема СУпк 2-73-31
Maximum working pressure, MPa (kg / cm²):
when the pumping unit is working

4 (40)

when the pumping unit is inoperative

14 (140)

Polished rod diameter, mm


Compensation for misalignment of the wellhead and piston within the circular coordinate, mm


Connecting thread NKT73
Overall dimensions, mm


Weight, kg