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Customized Polyurethane Helium Sealing Gaskets for Wheel Hub Applications. Long-Lasting Reliability: Compressive permanent deformation <20%, extending service life by 3-5 times. Cost-Effective Solution: 30% lower procurement cost than PTFE/metal seals, no adhesive required. Flexible Customization: Supports OEM shapes (O/U/V/Irregular) and full customization from samples/designs.