SEAL Russian patent published in 2000 - IPC

FIELD: mechanical engineering; shutoff devices; seals for closing air and vacuum lines. SUBSTANCE: proposed seal has body with channel, shutoff member seal with through hole, shutoff member displacement drive and guides. Through hole in seat communicates with body channel. Sealed surfaces of seat are mating some of these surfaces are arranged on body under channel, and others, on through hole. Shutoff member is provided with wall cross relative to channel and with projection on wall. Surfaces to be sealed arranged on body over channel are located in one plane square to displacement of shutoff member. Sealed surfaces on hole form through section crosswise relative to direction of channel. Dimensions of through section decrease in direction from shutoff member. Which is provided with wall. Wall crosswise relative to channel meets shape of through section of hole. Projection is provided with sealed surface located square to displacement of shutoff member. EFFECT: increased tightness provided by seal. 4 cl, 2 dwg