... extentconsiderable pressure against the piston, moves withcylinder.However, as a part of the piston seal is fixed into a grovein the cylinder shape of the seal is as shown in belowfigure, distorted toward ... piston moves larger.The seal then could change in shape further, but sinceend of the seal is fixed into the groove in the cylinder, thedistortion is limited to the same amount as previouslydescribed.The...