F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16J—PISTONS; CYLINDERS; SEALINGS
F16J15/00—Sealings
F16J15/16—Sealings between relatively-moving surfaces
F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
F16J15/184—Tightening mechanisms
F16J15/185—Tightening mechanisms with continuous adjustment of the compression of the packing
F16J15/186—Tightening mechanisms with continuous adjustment of the compression of the packing using springs