Abstract: A sealing arrangement for the inlet and outlet opening of a vessel for continuous treatment, under pressure, of a textile web which is passed over at least one roller within the vessel is disclosed. The sealing arrangement includes at least one seal element having endwise faces which are in contact with side members of a pair of oppositely disposed side members, which in turn are secured to lateral walls of the vessel, each of the side members being in sealing contact with the roller and the adjacent walls of the vessel. The side members are composed of a resiliently compressible material of construction which can be resiliently compressed at least in the direction of extension of the longitudinal central axis of the roller. The seal element is carried by a retaining bar, which has ends which are in sealing contact with the side members. The retaining bar is sealingly engageable with a traverse member extending along a longitudinal edge of the vessel opening.