Inflatable expansion seal is a ring-shaped or straight-shaped sealing product composed of a strip-shaped hollow rubber airbag and an inflatable exhuast nozzle. Its working principle is When the airbag is inflated through the inflator, the cross-sectional shape of the airbag will expand and deform, thus realizing effective sealing.When the exhaust valve is opened to discharge the air inside the airbag, the cross section of the airbag shrinks, that is, it is out of the sealed state.
