| 摘要 |
<p>A shaft sealing device having a first seal section, a second seal section, a first back plate, and an engagement ring. The first sealing section has a fitting section fitted in a seal housing, a first seal lip whose inner peripheral surface is sealingly fitted on the outer peripheral surface of a shaft to seal fluid, and a reinforcement ring having reinforcement section for holding the first seal lip and also having a tube section and connection section that are integrally joined to the fitting section. The second seal section is made of resin, placed on the opposite side of the first seal section from the sealed fluid, and has the inner peripheral surface sealingly fitted on the shaft. The first back plate is supported by the reinforcement ring or engagement ring for holding a support section of the second seal section. The engagement ring has a fitting section fitted to a hole forming surface of the seal housing, has a first engagement section engaging with an end face of the seal housing, and has a second engagement section for causing the first engagement section to support the reinforcement ring. The device has a seal between the surface of the engagement ring and the hole forming surface, and the seal has a smaller radial thickness than the reinforcement ring or the engagement ring.</p> |
