NON-CONTACT LABYRINTH SEAL ASSEMBLY

摘要

A non-contact labyrinth seal assembly (10) includes a carrier (12) having cylindrical outer flange (18) with an annular leg (20) extending inwardly therefrom. An elastomeric body (14) is attached to the leg (20). The body (14) has a first pair of seal lips (28, 29) extending radially inwardly in diverging relation from one another and a second pair of seal lips (32, 33) spaced radially outwardly from the first pair of seal lips (28, 29). The second pa ir of seal lips (32, 33) includes radially outermost and a radially innermost seal lips. The radially outermost seal lip (32) has a cylindrical inner surface (36) and an inner surface of the radially innermost seal lip (33) has a first portion (38) extending substantially parallel to the cylindrical inner surface (36) to form an annular channel (34) and a second portion (39) extending radially outwardly to an innermost lip free end (41) that is radially aligned with the cylindrical inner surface (36) to form an annular opening (42) having a width less than a width of the channel (34). A sleeve (16) has an annular barrier (50) extending radially outwardly to an annular flange (52) that extends axially through the opening (42) into the channel (34).