Abstract: A unitized seal assembly (10) for a rotary shaft (16) having a main section (20) rotatably supported in a housing (14) and a telescopic end (22) axially extendable relative to the main section (20). The seal assembly (10) comprises a generally rigid annular carrier body (28) supporting a flexible annular sealing member (36) and a inner wear sleeve (44) in running engagement with the sealing member (36). The inner wear sleeve (44) includes an annular mounting skirt (54) which is attached to one end of a pleated elastomeric boot (58). The other end of the boot (58) is attached to the telescopic end (22) of the rotating shaft (16). The boot (58) accommodates extension and retraction of the telescopic end (22) of the shaft (16) as it reciprocates during rotation. Therefore, as the shaft (16) rotates during operation, the boot (58) together with the wear sleeve (44) rotate relative to the sealing member (36) and the outer carrier body (28).