Large annular segmented seal with lock portions for missile launch tube

摘要

A hoop seal for a large annular opening having a high strength ring disposed in the hoop, the hoop having a sealing lip extending at an angle into the high pressure side of the seal, a base and a membrane connecting the hoop to the base which allows the hoop to rise on the side where the annular opening narrows and thereby provide a lateral force which acts to equalize the annular opening.