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A screw-connection pipe fitting with an elastomer seal forms the subject of this patent. The main feature of the design is that a series of grooves and fluid passages are used to ensure that the seal is pressurised by the fluid pressure in the pipe. This includes a groove in the threaded section of the fitting and various designs of groove or 'castellation' around the seal groove. The pressure is fed to the back side of the seal to ensure that it is energised against the fitting flange face. A number of seal design options including O-ring, Quad Ring and other shapes are illustrated.
๐ SIMILAR VOLUMES
An injection-moulding machine has been developed that uses a seal on the stem of the valve pin to prevent leakage of molten material.
try, such as sealing window frame members, sealing retrofit and replacement windows, as well as indoor applications, such as sealing bathtubs, sinks and shower surrounds. It is also useful for sealing components on, and areas of, a boat hull.