Patent ID: 7063329

Claim:
An assembly having a seal for installation into an annular groove of half dovetail configuration, said groove having a generally flat base portion, a first and a second side wall generally perpendicular with said base portion and extending into a mouth portion, said first side wall having a proximal end contiguous with said base portion and a distal end having an inwardly angled lip portion with a first flat surface that leads into an arcuate surface that ends into said mouth portion; said seal having a trapezoidal cross sectional area with a first wall, a second wall contiguous with said first wall, a third wall contiguous with said second wall, parallel with said first wall and having a shorter length than said first wall, and a fourth wall contiguous with said third and first wall; wherein when said seal is installed within said annular groove and not under compression, one of said seal second and fourth walls abuts said groove flat base portion, a portion of said seal third wall abuts said groove first side wall, and a portion of the other of said seal second and fourth walls abuts said first flat surface of said inwardly angled lip portion.