FIELD: manufacturing technology.
SUBSTANCE: invention relates to sealing equipment and can be used for equipment, operating under medium internal pressure, in particular, on heaters, chemical devices or other equipment. Key connection includes housing and cover connected by keys with formation of sealed gap. Housing is made with supports to accommodate cover in initial position and possibility of keys installation, and U-shaped sealing membrane is installed into sealed gap and welded to housing and cover with external welded seams.
EFFECT: invention improves connection reliability.
1 cl, 1 dwg
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