Patent ID: 7604243

Claim:
A composite seal comprising: a substantially annular first seal element comprising an upper body portion, an axial protrusion, and a neck portion located between the upper body portion and the axial protrusion, wherein: the upper body portion includes a radially outer lip, a radially inner lip, and first opposing inclined frustoconical surfaces extending to and contiguous with the neck portion, the first opposing inclined frustoconical surfaces defining a first angle therebetween; the axial protrusion includes second opposing inclined frustoconical surfaces extending to and contiguous with an axial end of the axial protrusion, the second opposing inclined frustoconical surfaces defining a second angle therebetween, and third opposing inclined frustoconical surfaces that are contiguous with the neck portion and extend away from the neck portion, the third opposing inclined frustoconical surfaces defining a third angle therebetween; the first angle and the second angle are substantially similar and 60° or greater; and the third angle is 90° or greater; and a substantially annular second seal element having a mouth portion, a throat portion and a recess portion, and wherein; the axial protrusion of the substantially annular first seal element is complementarily engaged with the recess portion of the substantially annular second seal element in an interlocking manner; the neck portion of the substantially annular first seal element complementarily abuts walls of the throat portion of the substantially annular second seal element; and the first opposing inclined frustoconical surfaces of the substantially annular first seal element complementarily abut walls of the mouth portion of the substantially annular second seal element.