Patent ID: 6666459
Filing Date: 2003-12-23
Classification: F16J

Abstract:
A radial shaft seal, comprising:at least one sealing ring made of a polymer material, the sealing ring comprising at least one sealing lip; a supporting ring that is attached to the at least one sealing ring, the supporting ring having first and second radial projections attached, respectively, to and contiguous with first and second axial projections that develop into one another through a 180 degree arc wherein the radial projections are arranged next to one another with an axial distance between them and wherein the first radial projection is covered at least partially on a side facing the second radial projection by a coating of an elastomeric polymer material, which coating is contiguous with and develops into the sealing ring that is made of the same elastomeric polymer; and an additional, circular gasket arranged without adhesion in a gap defined by the two radial projections of the supporting ring, the circular gasket being under axial prestress and contacting a shaft to be sealed, the additional gasket being made of an open-pore filter material and extending past the first and second axial projections.