A crankshaft oil seal assembly for an automotive engine
By using a multi-layer sealing structure and a support ring to replace worn parts in the crankshaft oil seal assembly of an automotive engine, the problem of decreased sealing performance in the prior art has been solved, resulting in a longer service life and better sealing effect.
CN224433406UActive Publication Date: 2026-06-30CHANGZHOU RONGHE POLYMER MATERIAL TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU RONGHE POLYMER MATERIAL TECH CO LTD
- Filing Date
- 2025-08-31
- Publication Date
- 2026-06-30
Smart Images
Figure CN224433406U_ABST
Abstract
This utility model discloses an automotive engine crankshaft oil seal assembly, comprising: an oil seal body; and sealing lips and dustproof lips fixedly disposed on both sides of the inner end of the oil seal body. In this automotive engine crankshaft oil seal assembly, the first and second metal inserts installed at both ends of the sealing lip in the oil seal body can form multiple sealing structures on both sides of the sealing end of the inner layer of the sealing lip through the outer sealing ring, middle sealing ring, and inner sealing ring wrapped around their outer sides. This allows the sealing end to replace the worn sealing end in prolonged use, thus providing multiple sets of seals with the crankshaft, improving the sealing performance and lifespan of the oil seal body during use. Simultaneously, the outer sealing ring, middle sealing ring, and inner sealing ring structure at both ends of the sealing end can also store lubricating oil, reducing wear during use and further extending the service life of the oil seal body.
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