Radial-shaft sealing rings with heat dissipation segments

Claim 1

A radial-shaft sealing ring for a medium being sealed, which comprises in combination: a sleeve-like sealing body having a radial inner periphery and at least one sealing lip with at least one sealing edge subject to radial preloading by a spring in a groove and frictional heat that causes premature wear thereof, said sealing body having two axial ends, one of which is in the form of an end face which has a first radially inner segment, said at least one sealing lip and said at least one sealing edge being arranged on part of said radial inner periphery of said sealing body between said two axial ends, with said radially inner segment of said end face adjoining said sealing edge, with at least said end face toward the medium being sealed, at least one said radially inner segment thereof, being at least partially unevenly shaped including depressions rather than only edge projections, said depressions extending in axial direction with depth thereof decreasing from the end face side as well as the segment in a direction toward the sealing edge so that heat is removed and dissipated quickly along the shortest path to surrounding medium, said depressions being provided also with the segments having a relatively great radius of curvature so that the segments extend as far as to the groove with the spring therein, said depressions being provided for greatly enlarged inner surfacing thereof particularly to facilitate heat dissipation more uniformly from said sealing lip with said sealing edge thereof to prevent excessive heating of the sealing ring having a long life expectancy and duration of use therewith.