A neoprene oil seal for underwater use

By introducing a second waterproof lip into the neoprene seal and working in tandem with the first waterproof lip, combined with multiple grooves and springs to provide elastic pressure, the problem of insufficient sealing performance of neoprene seals in underwater environments is solved, achieving reliable multi-layer protection and stable sealing effect.

CN224283462UActive Publication Date: 2026-05-26CHONGQING QUANCHENG OIL SEAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHONGQING QUANCHENG OIL SEAL CO LTD
Filing Date
2025-07-09
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Ordinary chloroprene oil seals cannot effectively resist water pressure in high-pressure underwater environments, leading to deformation, displacement, or rupture, and loss of sealing effect.

Method used

A multi-protection system was designed, in which the second waterproof lip works in conjunction with the first waterproof lip. Multiple grooves and springs provide elastic pressure to enhance sealing, and a cold-rolled steel plate skeleton provides structural support to ensure the stability of the rubber ring.

Benefits of technology

It greatly reduces the possibility of water penetration, forms a reliable multi-layer protection system, enhances the overall waterproof performance, and ensures the sealing and stability of the oil seal in the underwater environment.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

This utility model discloses a neoprene oil seal for underwater use, comprising: a rubber ring, the upper surface of which has a first mating groove, and the sidewall of the first mating groove has a second mating groove, the interior of the second mating groove being connected to the interior of the first mating groove; the lower surface of the rubber ring has a waterproof groove, the sidewall of which has a first waterproof lip, the upper surface of which is fixedly connected to the rubber ring, and the upper surface of the first waterproof lip is fixedly connected to a second waterproof lip. Through the coordinated operation of the second and first waterproof lips, the dual protection of this structure greatly reduces the possibility of water penetration, forming a reliable multi-layered protection system and enhancing the overall waterproof performance. The second mating groove ensures the rubber ring is securely installed, reducing gaps caused by improper installation, indirectly improving the waterproof effect, providing strong support for waterproofing, and ensuring the seal's tightness in underwater environments.
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Description

Technical Field

[0001] This utility model relates to the field of chloroprene oil seal technology, and in particular to a chloroprene oil seal for underwater use. Background Technology

[0002] Chloroprene rubber has excellent comprehensive properties, such as good oil and solvent resistance. Although its oil resistance is not as good as that of nitrile rubber, it has good resistance to gear oil and transformer oil. It also has excellent resistance to weathering and ozone aging, good flexibility and air impermeability, as well as certain heat resistance and corrosion resistance. These properties make chloroprene rubber one of the ideal materials for manufacturing oil seals.

[0003] Ordinary neoprene oil seals typically lack special structural designs for underwater applications. In high-pressure underwater environments, they may not be able to effectively withstand water pressure, leading to deformation, displacement, or rupture of the oil seal, thus losing its sealing effect. Utility Model Content

[0004] The purpose of this invention is to provide a neoprene oil seal for underwater applications. By having the second waterproof lip work in conjunction with the first waterproof lip, the dual protection greatly reduces the possibility of water penetration, forming a reliable multi-layer protection system and enhancing the overall waterproof performance. The second mating groove ensures that the rubber ring is installed firmly, reducing gaps caused by improper installation and indirectly improving the waterproof effect. This provides strong support for waterproofing and ensures the sealing performance of the oil seal in the underwater environment.

[0005] To achieve the above objectives, a neoprene seal for underwater applications is provided, comprising: a rubber ring, wherein a first mating groove is formed on the upper surface of the rubber ring, a second mating groove is formed on the sidewall of the first mating groove, and the interior of the second mating groove is connected to the interior of the first mating groove; a waterproof groove is formed on the lower surface of the rubber ring, a first waterproof lip is formed on the sidewall of the waterproof groove, and the upper surface of the first waterproof lip is fixedly connected to the rubber ring; a second waterproof lip is fixedly connected to the upper surface of the first waterproof lip. This multi-groove and double-waterproof-lip design enhances sealing and waterproofing capabilities, effectively protecting internal components of the equipment.

[0006] According to the aforementioned neoprene seal for underwater applications, the waterproof groove is located below the first mating groove, and the first waterproof lip is located on the inner surface of the rubber ring. A reasonable layout of the waterproof groove and waterproof lip optimizes the waterproofing path and improves the overall underwater sealing and protection effect.

[0007] According to the aforementioned neoprene oil seal for underwater applications, a plurality of friction protrusions are fixedly connected to the outer surface of the rubber ring, and the friction protrusions are distributed in an array. The arrayed friction protrusions increase the friction force, making the oil seal securely installed and preventing displacement and loosening during use.

[0008] According to the aforementioned neoprene oil seal for underwater applications, a spring groove is provided on the outer surface of the second mating groove, and a spring is engaged with the inner surface of the spring groove, extending into the interior of the second mating groove. The spring and groove engagement provides elastic pressure, ensuring a tight seal against the component and enhancing the durability of the seal.

[0009] According to the aforementioned chloroprene seal for underwater applications, a cold-rolled steel plate skeleton is internally provided within the rubber ring, and the cold-rolled steel plate skeleton is located between the first mating groove and the waterproof groove. The built-in cold-rolled steel plate skeleton enhances structural stability and ensures the proper functioning of the groove and waterproof structure.

[0010] According to the aforementioned neoprene oil seal for underwater applications, a sealing lip is fixedly connected to the inner surface of the rubber ring, and the sealing lip is positioned above the second waterproof lip. The sealing lip and the waterproof lip work together to form a multi-layer seal, further enhancing the waterproof sealing performance of the oil seal.

[0011] The above-mentioned solution has the following beneficial effects:

[0012] This utility model is provided with a first mating groove, a second mating groove, a rubber ring, a waterproof groove, a first waterproof lip, and a second waterproof lip. The second waterproof lip works in conjunction with the first waterproof lip, providing double protection that greatly reduces the possibility of water penetration and forms a reliable multi-layer protection system, enhancing the overall waterproof performance. The second mating groove ensures that the rubber ring is installed firmly, reducing gaps caused by improper installation and indirectly improving the waterproof effect, providing strong support for waterproofing and ensuring the sealing of the oil seal in the underwater environment.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a perspective view of a chloroprene oil seal for underwater applications according to this utility model.

[0016] Figure 2 This is a front view of a chloroprene oil seal for underwater applications according to this utility model.

[0017] Figure 3 This is a cross-sectional perspective view of a chloroprene oil seal for underwater applications according to this utility model.

[0018] Figure 4 For utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0019] Legend:

[0020] 1. Rubber ring; 2. Friction protrusions; 3. First waterproof lip; 4. Second waterproof lip; 5. Sealing lip; 6. Spring; 7. First mating groove; 8. Cold-rolled steel plate skeleton; 9. Spring groove; 10. Second mating groove; 11. Waterproof groove. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-4 This utility model discloses a chloroprene seal for underwater applications, comprising: a rubber ring 1, with a first mating groove 7 on its upper surface for tight fitting with external components to achieve initial positioning and sealing; a second mating groove 10 on the sidewall of the first mating groove 7, the interior of which communicates with the interior of the first mating groove 7; the second mating groove 10 and the first mating groove 7 are interconnected, providing space for nesting and collaborative work with other components; a waterproof groove 11 on the lower surface of the rubber ring 1 for accommodating waterproof-related structures and preventing water intrusion from below; a first waterproof lip 3 on the sidewall of the waterproof groove 11, with its upper surface fixedly connected to the rubber ring 1; the first waterproof lip 3 tightly fitting against the sidewall of the waterproof groove 11, effectively preventing moisture from entering through the gap between the lower surface of the rubber ring and the outside; and a second waterproof lip 4 fixedly connected to the upper surface of the first waterproof lip 3, working in conjunction with the first waterproof lip 3 to further enhance the waterproof effect, providing multiple layers of protection against water penetration.

[0023] The waterproof groove 11 is located below the first mating groove 7. This top-bottom arrangement allows the oil seal to achieve both sealing with external components above and waterproofing below. The first waterproof lip 3 is located on the inner surface of the rubber ring 1, blocking water flow through the internal space. Several friction protrusions 2 are fixedly connected to the outer surface of the rubber ring 1 in an array. The friction protrusions 2 increase the friction between the outer surface of the rubber ring and the contacting components, ensuring the oil seal is securely installed and not easily slipped. The outer surface of the second mating groove 10 is provided with a spring groove 9, which is used to precisely position the spring 6, ensuring the accuracy of the spring installation position. The inner surface of the spring groove 9 is engaged with a spring. 6. The spring 6 extends into the interior of the second mating groove 10. The spring 6 provides elastic pressure within the second mating groove 10, allowing the rubber ring 1 to better fit the external components during operation and enhancing the sealing performance. The interior of the rubber ring 1 is provided with a cold-rolled steel plate skeleton 8, which is located between the first mating groove 7 and the waterproof groove 11. The cold-rolled steel plate skeleton 8 provides structural support for the rubber ring, ensuring its shape stability in complex underwater environments and guaranteeing the normal functioning of each groove and waterproof lip. A sealing lip 5 is fixedly connected to the inner surface of the rubber ring 1, and the sealing lip 5 is located above the second waterproof lip 4. The sealing lip 5 further seals the internal space, working together with the waterproof lip below to prevent liquid leakage in all directions.

[0024] Working Principle: First, ensure the installation area is clean and free of debris to prevent impurities from affecting the oil seal's sealing effect. Prepare the rubber ring 1 with a cold-rolled steel plate skeleton 8. The cold-rolled steel plate skeleton 8 provides structural support for the rubber ring 1, ensuring its stable shape during subsequent installation and operation. Align the rubber ring 1 with the installation position. The friction protrusions 2 on the outer surface of the rubber ring 1 increase the friction with the installation area, ensuring that the rubber ring 1 will not slide freely during installation and guaranteeing the accuracy of the installation position. Tightly fit the first mating groove 7 on the upper surface of the rubber ring 1 with the corresponding part of the external component to achieve initial positioning and sealing. At the same time, the second mating groove 10, which is connected to the side wall of the first mating groove 7, also prepares for the subsequent installation of components. In the spring groove 9 on the outer surface of the second mating groove 10, snap the spring 6 into place. The spring groove 9 can accurately position the spring. 6. Ensure the installation position is accurate. One end of the spring 6 is located in the spring groove 9, and the other end extends into the second mating groove 10. The spring 6 provides elastic pressure in the second mating groove 10, allowing the rubber ring 1 to better fit the external parts during subsequent operation, further enhancing the sealing performance. In the waterproof groove 11 on the lower surface of the rubber ring 1, the first waterproof lip 3 is tightly fitted to the side wall of the waterproof groove 11, preventing water from entering from the gap between the lower surface of the rubber ring 1 and the outside. The second waterproof lip 4, which is fixedly connected to the upper surface of the first waterproof lip 3, works together to form multiple layers of protection, further enhancing the waterproof effect and preventing water penetration. The sealing lip 5 on the inner surface of the rubber ring 1 is located above the second waterproof lip 4, further sealing the internal space. Together with the waterproof lip below, it prevents liquid leakage in all directions. At this point, the underwater neoprene seal is installed and can work normally.

[0025] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A chloroprene seal for underwater use, comprising: A rubber ring (1) is characterized in that: a first mating groove (7) is provided on the upper surface of the rubber ring (1), a second mating groove (10) is provided on the side wall of the first mating groove (7), and the interior of the second mating groove (10) is connected to the interior of the first mating groove (7), a waterproof groove (11) is provided on the lower surface of the rubber ring (1), a first waterproof lip (3) is provided on the side wall of the waterproof groove (11), and the upper surface of the first waterproof lip (3) is fixedly connected to the rubber ring (1), and a second waterproof lip (4) is fixedly connected to the upper surface of the first waterproof lip (3).

2. A chloroprene oil seal for underwater use according to claim 1, characterized in that: The waterproof groove (11) is located below the first mating groove (7), and the first waterproof lip (3) is located on the inner surface of the rubber ring (1).

3. A chloroprene seal for underwater use according to claim 1, characterized in that: The outer surface of the rubber ring (1) is fixedly connected with a number of friction protrusions (2), which are arranged in an array.

4. A chloroprene oil seal for underwater use according to claim 1, characterized in that: The outer surface of the second mating groove (10) is provided with a spring groove (9), and the inner surface of the spring groove (9) is fitted with a spring (6), and the spring (6) extends into the interior of the second mating groove (10).

5. A chloroprene seal for underwater use according to claim 1, characterized in that: The rubber ring (1) is provided with a cold-rolled steel plate skeleton (8) inside, and the cold-rolled steel plate skeleton (8) is located between the first mating groove (7) and the waterproof groove (11).

6. A chloroprene seal for underwater use according to claim 1, characterized in that: The inner surface of the rubber ring (1) is fixedly connected to a sealing lip (5), and the sealing lip (5) is located above the second waterproof lip (4).