(DE4241943-A1)      The sealing valve (10) has two housing parts (11,12) enclosing a seal (13) which closes a gap between the two housing parts. These have non-aligned bores (14,15) allowing battery acid to be discharged from the battery cell when the seal is displaced from a cooperating sealing surface (21) in response to the internal battery pressure.    The seal has an integral spring (22,23,24) on the opposite side to a sealing bead contacting the sealing surface and biasing the sealing bead in the direction of the latter.    ADVANTAGE -   Suitable for low-cost mass prodn.    (DE4241943-C2)      A plugging device and sealing valve for a container orifices, the container comprising a main housing (11, 12) with a degassing nipple (15) and in which is arranged a hermetising element (13) comprising an encircling sealing lip (20).    The hermetising element (13) is designed as a flexible rubber seal (13) positionally fixed in place, and the sealing lip or rim (20) is designed as at least one sealing edge on the pressure-loaded first side (28) of the seal (13).    USE/ADVANTAGE -   Storage batteries for automobiles.Minimal fluctuation in pressure in container.sealing is simple to process.Pressure ratios between valves are kept very fine.    (US5388615-A)      A sealing valve for a container has an opening, comprising a housing having a gas release connector, a sealing surface and a seal arranged in the housing. The seal comprises a circumferential sealing bead adapted, in an unpressurised state, to seat on the sealing surface. In a pressurised state it is separated from the sealing surface. The seal is made from a rubber-elastic seal material. The sealing bead having, on a first pressurised side of the seal, a sealing edge. The seal has, on a second side, a spring integral with the seal adapted to act on the sealing edge.    The spring has a spring-bead made from the material of the seal, the spring-bead being supported on the wall of the housing opposite to the sealing edge. The seal is configured in the shape of an apertured disc and exhibits an attachment strip on an outer edge. The attachment strip fixes a position of the seal relative to the housing. The seal is provided with an opening in the vicinity of its middle. The sealing edge borders on the opening. A pressure distribution unit distributes a pressure of a fluid located in the container over nearly an entire surface of the seal.    USE -   Seal and valve for container opening, esp. for storage battery requiring gas release valve.