Patent ID: 9410623
Filing Date: 2016-08-09
CPC Classification: F02F,F16J

Claim Text:
1. An arrangement for sealing a piston rod of a reciprocating piston machine, which reciprocates essentially in a straight line relative to a through opening, comprising: at least two internally clamping sealing rings, which are situated in a region of the through opening and are essentially stationary relative to a seal housing, and are supported in the seal housing such that the at least two sealing rings are able to move in a floating fashion; a spacer ring provided between at least two sealing rings, wherein the spacer ring is externally guided without play or with a slight amount of play in the seal housing and on a radial inside oriented toward the piston rod, the spacer ring has a greater amount of play in the radial direction; and a retention chamber formed by the spacer ring, the sealing rings and the piston rod, for sealing a medium, therein; wherein the spacer ring does not touch the piston rod, and the spacer ring is spaced apart from the piston rod; and wherein the spacer ring has at least one passage for drainage of the medium from the retention chamber, and each spacer ring has a crenellated contour along its outer circumference in a circumferential direction.