Abstract: A seal having a primary seal element including a casing element of annular form made a relatively rigid material and having an at least partially elastomeric sealing lip body bonded thereto, and a single or one-piece wear sleeve and unitizing casing portion including a radial flange acting as an axially exterior protective element preventing relative axial movement of the associated primary seal in one direction, an axially extending wear sleeve portion having a cylindrical outer diameter surface facing toward and sealingly engaged with the seal band portion of the primary lip, and a second, unitizing or locking flange of reduced thickness and reduced diameter with respect to the protective flange and preventing axial removal of the primary seal unit in the other axial direction.

Abstract: An improved seal assembly which provides a seal having a unitizing element adapted to fit over one portion of a sealed mechanism and a primary seal assembly adapted to be received within or with respect to another sealed part which moves relative to the first sealed part. The seal includes a unitizing or locking flange made from a reduced thickness or skirt portion at the end of the wear sleeve on the unitizing element, such flange being axially offset from the seal contact band. The assembled seal is made from a casing unit, an elastomer which provides a mounting surface an a resiliency imparting element, together with a bonded fluoroelastomer ring which is assembled protectively with a unitizing casing which includes a wear sleeve portion having one radial flange thereof forming a protective element and the other being a unitizing flange made from an end portion of the wear sleeve.

Abstract: A unitized oil seal with inner and outer rigid casings. A seal lip body with primary and auxiliary sealing lips is bonded to the outer casing, and the sealing lip cooperates with an axial flange on the inner casing to provide a fluid-tight seal band area. The outer casing includes an auxiliary rubber or metal element which positions a locking flange on the inner casing against axial displacement. The axial flange on the inner casing has a radially inturned edge on the end opposite the locking flange to facilitate assembly. The inside diameter of the inner casing and the outside diameter of the outer casing include rubber or plastic sleeves for ease of installation on an associated sealed mechanism.The present invention relates generally to oil seals, and more particularly, to so-called unitized oil seals intended specifically for motor vehicles and related applications.

Abstract: A hub cap assembly for vehicle axles which includes a rigid hub cap body with a sidewall portion and a radially inwardly directed flange having a window therein so that the lubricant level in the axle housing can be seen without removing the hub cap. The window is received by a flange having inner and outer axially directed surfaces and an inner edge defining an opening in the cap body. The window unit includes a transparent central panel and a mounting portion comprising first and second annular, generally axially extending window-mounting flanges which are spaced radially apart from each other so as to define an annular seal-receiving groove. One window-mounting flange has an axially facing end portion snugly received against the outer axially directed surface, and another window-mounting flange extends partly through the cap body opening. The other or second window-mounting flange includes a locking device with a part which snugly engages the inner axially directed surface of the flange.