Oil-resistant fluororubber and aramid fiber composite sealing ring structure

By using a three-layer rotating fit structure and material combination, the problem of friction and wear of fluororubber seals under rotating conditions is solved, thereby improving the wear resistance and sealing performance of the seals, extending their service life and reducing the risk of leakage.

CN224550770UActive Publication Date: 2026-07-24ANHUI YONGZHENG SEAL CO LTD
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Patent Information

Application Number
CN202521776847.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-20
Publication Date
2026-07-24
Estimated Expiration
2035-08-20

AI Technical Summary

Technical Problem

Existing fluororubber seals fail under rotating conditions due to friction and wear, resulting in scratches, missing pieces, or even tears, which affects the sealing performance and service life of the equipment.

Method used

It adopts a three-layer rotary mating structure, including an outer layer, a middle layer and an inner layer. The outer layer and the middle layer are connected by a locking block and a locking groove. The inner layer is provided with a spiral oil return groove. The material combination uses fluororubber, aramid fiber and graphene to enhance wear resistance and sealing performance.

Benefits of technology

It effectively reduces friction and wear, extends the service life of seals, reduces the risk of oil leakage, prevents external impurities from entering, and improves the reliability of equipment operation.

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Abstract

The utility model discloses an oil-resistant fluororubber aramid fiber composite sealing ring structure, which relates to the technical field of fluororubber sealing rings, and comprises an outer layer, a middle layer and an inner layer, the inner side of the outer layer is rotatably matched and connected with the outer side of the middle layer, and the inner side of the middle layer is rotatably matched and connected with the outer side of the inner layer. The inner layer is provided with oil return grooves, the oil return grooves are spirally arranged on the inner side of the inner layer, the outer side and the inner side of the inner layer are made of fluororubber, and the middle layer is made of aramid fibers. The three-layer rotating matching structure effectively solves the problem of frictional wear of a traditional integrated sealing ring under the rotating working condition, friction stress is dispersed through interlayer relative rotation, damage such as surface scratches and missing blocks is reduced, and the service life of the sealing ring is prolonged. The spiral oil return groove can actively recover leaked media, reduce the risk of oil leakage, meanwhile prevent external impurities from invading, guarantee internal cleanness of equipment and reduce abrasion and corrosion of parts.
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