Patent ID: 7857323

Claim:
A multi-piece seal comprising: a circumferentially continuous outer member having in an uncompressed state a cross-sectional shape defined by a substantially semi-circular-shaped portion with an outer surface and an inner surface that defines a substantially semi-circular channel and that terminates in free ends each having a pair of opposed lobes with one lobe of each pair extending radially outward of the outer surface of the semicircular shaped portion; and a circumferentially continuous inner member disposed at least partially in the channel of the outer member and having in an uncompressed state a central body with a substantially round cross-sectional shape with a projection extending generally radially therefrom and received between the free ends with the projection not engaged by the lobes when the seal is uncompressed and in assembly with the seal axially compressed the projection is engaged by the immediately adjacent opposed lobes of the outer member and the distal opposed lobes are axially compressed into sealing engagement.