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S Seals

The S-Seal is designed to provide reliable sealing between machined components as a versatile and reliable seal in cyclical high-pressure and -temperature applications in which a conventional, interference-type seal (O-rings, belt packing, dovetail, etc.) is typically inadequate. Utilizing metal coil springs molded integrally into the exposed seal corners as anti-extrusion devices, these "continuous" coil springs eliminate weak points around the seal's circumference. Many applications in which a machined gap between the sealing bore and shaft is required, for example, a mandrel hanger neck and tubing head adapter bore; there are both O.D. and I.D. applications of the S-Seal with sizes available in nominal diameters up to 20". The S-Seal design can be rated up to 10,000 psi working pressure and a 0° to 250°F temperature range for all sizes. Special designs allow qualification to 15,000 psi working pressure and 300°F.