Recessed Annular Seal Geometry for Easier Groove Fitting

The seal member is divided into multiple functional regions: a first region with greater radial thickness for initial fitting and contact, and a second region with lesser radial thickness. This segmentation allows different parts of the seal member to serve different purposes - the first region facilitates easy fitting while the second region maintains sealing contact, resolving the contradiction between workability and sealing performance.

Different radial thicknesses are assigned to different angular regions of the seal member. The first region (with greater thickness) provides ease of fitting and initial contact, while the second region (with lesser thickness) provides sustained sealing contact. This local differentiation of properties allows the seal member to simultaneously achieve good workability and reliable sealing without requiring uniform considerable deformation throughout.

The seal member's radial thickness is segmented into a first region with greater thickness and a second region with lesser thickness. The greater thickness in the first region allows the seal member to be fitted with less deformation, improving fitting ease. Meanwhile, the second region maintains sufficient contact area with the groove wall surfaces to ensure long-term sealing performance and extend seal member life.

The seal member is pre-formed with an elliptical cross-section (greater radial thickness in the first region) before fitting. This preliminary shaping allows the seal member to engage the groove with reduced deformation during installation, improving fitting ease. The pre-configured geometry ensures that adequate contact area is maintained during operation, preventing premature wear and extending service life.

The seal member is segmented into a first region with greater radial thickness and a second region with lesser radial thickness. This segmentation allows the first region to provide adequate contact area for adhesion without requiring excessive overall deformation. The reduced deformation requirement simplifies the fitting process, reducing complexity while maintaining reliable adhesion through the strategically positioned first region.

Greater radial thickness is concentrated in the first region where adhesion to the groove wall surfaces is most critical. This localized quality enhancement provides sufficient contact area for reliable sealing without requiring uniform considerable deformation throughout the entire seal member. The focused approach reduces overall compression force requirements and simplifies the fitting process.