Abstract: An annular wear sleeve assembly is installable on a circular metal shaft, or in a circular opening of a surrounding housing, to provide a smooth wear-resistant surface engageable with an annular elastomeric sealing element carried on the housing or the shaft. The wear sleeve includes a radially deformable liner that maintains biased contact with the shaft or housing surface regardless of tolerance variations in the housing or shaft diameter. The liner is constructed to provide a low force installation and to act as a thermal conduction device between the inner surface of the sleeve and the shaft or housing.

Abstract: Collar forming apparatus for forming an upstanding flange around an existing hole in a tube or plate comprising a pair of forming members mounted on and movable axially and radially with respect to the forming head between retracted positions and extending collar forming positions displaced axially and radially away from the retracted positions wherein at least portions of the forming members underlie the edge of the wall surrounding the opening. The forming members are moved to their collar forming positions by a wedge member that is movable axially with respect to the forming head to a predetermined axial position. Abutment means in the form of cooperating surface portions on the wedge member and the formation means acts between the wedge member and the formation means to impart radial and axial forces on the formation means when the wedge member is moved to its predetermined axial position to move the forming members to their collar forming positions.