Oil-resistant flame-retardant NBR sealing element testing mechanism

By designing a testing mechanism for oil-resistant and flame-retardant NBR seals, the problem of incomplete seal testing was solved, and simulation testing under different pressure environments was achieved, improving the accuracy and safety of test results and enhancing production quality control.

CN223796253UActive Publication Date: 2026-01-13JIAXING TOSUN RUBBER&PLASTIC CO LTD
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Patent Information

Application Number
CN202520485067.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-19
Publication Date
2026-01-13
Estimated Expiration
2035-03-19

AI Technical Summary

Technical Problem

Existing sealing component testing devices do not perform thorough testing under different pressure environments, resulting in incomplete test results and affecting performance and production quality.

Method used

A testing mechanism for oil-resistant and flame-retardant NBR seals was designed, comprising a tank, a test chamber, a pressure pipe, a lead screw motor, a conveyor belt assembly, a partition plate, a heating plate, and grippers. It can simulate different pressure, temperature, and corrosive environments to conduct comprehensive testing, and reduces manual intervention through automated operation via the conveyor belt.

Benefits of technology

This technology enables comprehensive pressure testing of seals, improving the accuracy and safety of test results, reducing the risks associated with manual operation, and enhancing the practicality of the device and production quality control.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of sealing element testing, and discloses an oil-resistant flame-retardant NBR sealing element testing mechanism which comprises a tank containing box, the upper surface of the tank containing box is fixedly connected with a testing box, and the upper surface of the testing box is fixedly connected with a display screen, a hose, a partition plate and an oil tank. According to the utility model, the structure is reasonable, the sealing element is randomly inspected, the sealing element is placed through the air pressure pipe, the lead screw motor at one side of the air pressure pipe is started to drive the lead screw to rotate, the air pressure pipe is connected with the test pipe in an inserted manner, and the air pressure tank is started; the conditions that different pressures are lacked in detection of the sealing element in the prior art, the quality of the sealing element is poor, adjustment is not conducted in time, and the production yield is affected are reduced, and the purposes that different pressures are tested, the application scene of the sealing element is simulated more comprehensively, the sealing element is tested more perfectly, and the testing efficiency is improved are achieved. And the method is more responsible for selling customers, and the production quality is better.
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Description

Technical Field

[0001] This utility model relates to the field of sealing component testing technology, specifically to an oil-resistant and flame-retardant NBR sealing component testing mechanism. Background Technology

[0002] Seals are widely used in the chemical and mechanical industries to prevent fluid or solid particles from leaking from adjacent mating surfaces and to prevent external impurities (such as dust and moisture) from entering the interior of machinery and equipment. The performance of seals directly affects the normal operation of machinery and equipment; if a seal is substandard or fails, the entire machine will become unusable. Therefore, seals are usually tested before use.

[0003] The sealing component testing device disclosed in Chinese Utility Model Patent Application Publication No. CN217358893U can test the sealing performance of sealing components in high temperature and high pressure liquid environments. However, this device does not solve the problem of the lack of consideration for different pressures when testing sealing components in the past, resulting in incomplete testing and problems in actual use. In the past, the testing environment of sealing components lacked a more comprehensive consideration, resulting in incomplete test results for a few items, which made it more prone to problems in subsequent use. Therefore, we propose a new device to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an oil-resistant and flame-retardant NBR seal testing mechanism, which solves the problem that previous seal testing lacked consideration for different pressures, resulting in incomplete testing and problems in actual use. Furthermore, previous mechanisms lacked a more comprehensive consideration of the operating environment of the seals during testing.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: It includes a canister box, a test chamber fixedly connected to the upper surface of the canister box, a display screen fixedly connected to the upper surface of the test chamber, a pneumatic tube slidably connected inside the test chamber, a lead screw threaded through one side of the pneumatic tube, a lead screw motor inserted into one end of the lead screw, a flexible hose inserted into one end of the pneumatic tube, and a pressure tank inserted into one end of the flexible hose. A test tube is fixedly connected inside the test chamber, a pressure sensor is fixedly connected inside the test tube, a detection chamber is fixedly connected to one side of the canister box, a conveyor belt assembly is rotatably connected inside the detection chamber, a conveyor motor is inserted into one side of the conveyor belt assembly, a partition plate is fixedly connected inside the detection chamber, a heating plate is fixedly connected inside the detection chamber, and a clamp is engaged on one side of the detection chamber.

[0008] Optionally, the upper part of the air pressure pipe can be adapted to a seal, the hose is a high-pressure resistant hose, and the air pressure tank has a low-pressure tank and a medium-pressure tank.

[0009] Optionally, the test tube has an internal cavity that can be adapted to a pneumatic tube, the number of conveyor belts is four, and the interior of the test chamber is divided into a low-pressure zone and a medium-pressure zone.

[0010] Optionally, the surface of the partition plate is provided with a high-temperature and corrosion-resistant coating, the heating plate can be temperature-adjustable, and one side of the detection box is provided with an elbow that can be adapted to the gripper.

[0011] Optionally, an air filter box is inserted into the lower surface of the detection box, and an oil tank is fixedly connected to one side of the detection box. The oil tank is compatible with an external oil supply device.

[0012] Optionally, a small oil pump is inserted inside the oil tank, an oil pipe is inserted at one end of the small oil pump, a small-dose nozzle is inserted at one end of the oil pipe, a large oil pump is inserted inside the oil tank, and the small-dose nozzle is an atomizing nozzle.

[0013] Optionally, a thick oil pipe is inserted into one end of the large oil pump, and a large-dose nozzle is inserted into one end of the thick oil pipe. The thick oil pipe is made of corrosion-resistant PC material.

[0014] Optionally, a water tank is fixedly connected to one side of the detection box, a water pump is inserted into the inside of the water tank, a water pipe is inserted into one side of the water pump, a flushing drain is inserted into one end of the water pipe, and the water tank can be adapted to an external water supply device.

[0015] In summary, the technical effects and advantages of this utility model are as follows:

[0016] 1. This utility model has a reasonable structure. By randomly selecting seals and placing them through a pneumatic tube, a screw motor on one side of the pneumatic tube drives the screw to rotate. The pneumatic tube is connected to a test tube, and the pressure tank is activated. Pressure enters the pneumatic tube through a flexible hose. This reduces the previous lack of consideration for different pressures during seal testing, which led to incomplete testing, problems in actual use, quality issues, and delayed adjustments, affecting future sales reputation and production output. This new design achieves a more comprehensive simulation of application scenarios through testing under different pressures, providing more thorough testing of seals, greater responsibility to customers, and improved production quality. The pressure sensor operates, and the display shows the results, reducing the errors caused by manual inspection and the lack of convenient result display methods. Manual analysis is prone to errors, leading to missed problems and incorrect quality analysis, resulting in production issues and seriously impacting subsequent use. This design achieves a comprehensive solution through pressure testing. The force sensor enables more accurate testing of seal quality, resulting in more scientific and accurate test results. This enhances production quality and significantly improves the device's practicality. After testing, the seal is removed and placed on a conveyor belt, driven by a motor. This eliminates the need for manual, step-by-step operations, which was complex, time-consuming, and labor-intensive, and carried out potentially dangerous testing that could lead to injury. The conveyor belt system automates the testing, greatly improving personnel safety. Its stable operating speed ensures more consistent and comprehensive testing, resulting in more scientific and complete results, further enhancing the device's practicality. The partition plate eliminates the lack of segmentation considerations in previous multi-test methods, preventing mixed testing that could severely impact results and lead to incorrect quality analysis, affecting overall production quality and increasing costs. The partition plate separates different areas, minimizing external influences and ensuring more scientific and reasonable test results, further enhancing the device's practicality.

[0017] 2. In this utility model, a small oil pump operates, and oil from inside the oil tank enters the small-dose nozzle through an oil pipe, atomizing it and delivering it to the low-pressure and medium-pressure zones. A large oil pump operates, and oil from inside the oil tank enters the large-dose nozzle through a thick oil pipe, atomizing it and delivering it to the low-pressure and medium-pressure zones. This reduces the shortcomings of previous methods where testing sealing components lacked comprehensive consideration of the operating environment. This resulted in incomplete test results for a limited number of items, making subsequent use more prone to problems and leading to biased analysis by personnel. This significantly limited the application scenarios, severely impacting future sales and use, greatly reducing production volume and increasing costs. By analyzing the corrosion of sealing components under low-pressure conditions and different dosages of atomized oil, this invention greatly improves the versatility of the mechanism and makes its testing structure more comprehensive. A better understanding of the finished product quality and more accurate adjustments to subsequent processes significantly improve the practicality of the mechanism. The operation of the heating plate eliminates the previous lack of testing on the high-temperature flame-retardant function of seals, which led to problems such as seal breakage when used in high-temperature environments due to insufficient consideration of this aspect. In severe cases, this resulted in equipment damage and personnel injury. High-temperature flame-retardant testing under different conditions allows for a more accurate understanding of its performance, better positioning for future applications, and more precise adjustments to subsequent production processes, greatly enhancing the practicality of the device. The water pump operates, spraying water from the tank through pipes and flushing outlets, reducing the previous lack of consideration for residual corrosive oil on the seal surface after testing. This prevented corrosion during subsequent testing, which could lead to equipment damage and increased costs. The flushing outlet ensures a cleaner surface, greatly reducing corrosion, protecting the mechanism, lowering operational risks, and significantly improving the safety of the mechanism. The use of grippers reduces the danger posed by small residues on the seal surface during cleaning, which could lead to injury when handling the seal. This significantly improves the mechanism's practicality. The grippers place the seal in the pneumatic tube, and a screw motor on one side of the tube rotates it. The tube connects to the test tube, and the pressure tank is activated. Pressure is introduced through a hose into the tube, and the pressure is continuously increased until the seal ruptures. This addresses the shortcomings of previous mechanisms that lacked destructive testing to determine the seal's lifespan, leading to delayed replacement and other problems. Destructive testing allows for a better understanding of the seal's quality and lifespan under various usage scenarios, greatly enhancing the mechanism's usability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an exploded view of the test box structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the explosion of the detection box structure of this utility model;

[0021] Figure 4 This is an exploded schematic diagram of the water tank structure of this utility model.

[0022] In the diagram: 1. Tank container; 2. Test chamber; 3. Display screen; 4. Pressure pipe; 5. Lead screw; 6. Lead screw motor; 7. Hose; 8. Pressure tank; 9. Test tube; 10. Pressure sensor; 11. Detection chamber; 12. Conveyor belt assembly; 13. Conveyor motor; 14. Divider plate; 15. Heating plate; 16. Gripper; 17. Air filter box; 18. Oil tank; 19. Small oil pump; 20. Oil pipe; 21. Small dose nozzle; 22. Large oil pump; 23. Thick oil pipe; 24. Large dose nozzle; 25. Water tank; 26. Water pump; 27. Water pipe; 28. Flushing drain. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example: Reference Figures 1-4 The oil-resistant and flame-retardant NBR seal testing mechanism shown includes a tank box 1, a test chamber 2 fixedly connected to the upper surface of the tank box 1, a display screen 3 fixedly connected to the upper surface of the test chamber 2, a pressure pipe 4 slidably connected inside the test chamber 2, a lead screw 5 threaded through one side of the pressure pipe 4, a lead screw motor 6 inserted into one end of the lead screw 5, a hose 7 inserted into one end of the pressure pipe 4, a pressure tank 8 inserted into one end of the hose 7, a test tube 9 fixedly connected inside the test chamber 2, a pressure sensor 10 fixedly connected inside the test tube 9, a detection chamber 11 fixedly connected to one side of the tank box 1, a conveyor belt assembly 12 rotatably connected inside the detection chamber 11, a conveyor motor 13 inserted into one side of the conveyor belt assembly 12, a partition plate 14 fixedly connected inside the detection chamber 11, a heating plate 15 fixedly connected inside the detection chamber 11, and a clamp 16 snapped onto one side of the detection chamber 11.

[0025] As a preferred embodiment of this example, Figures 1 to 3The diagram shows a canister box 1, a test chamber 2 fixedly connected to the upper surface of the canister box 1, a display screen 3 fixedly connected to the upper surface of the test chamber 2, a pressure pipe 4 slidably connected inside the test chamber 2, a lead screw 5 threaded through one side of the pressure pipe 4, a lead screw motor 6 inserted into one end of the lead screw 5, a hose 7 inserted into one end of the pressure pipe 4, and a pressure tank 8 inserted into one end of the hose 7. A test tube 9 fixedly connected inside the test chamber 2, a pressure sensor 10 fixedly connected inside the test tube 9, a detection chamber 11 fixedly connected to one side of the canister box 1, a conveyor belt assembly 12 rotatably connected inside the detection chamber 11, and a pressure tank 8 inserted into one side of the conveyor belt assembly 12. There is a transmission motor 13, a partition plate 14 is fixedly connected inside the test chamber 11, a heating plate 15 is fixedly connected inside the test chamber 11, and a clamp 16 is snapped onto one side of the test chamber 11. The upper part of the air pressure pipe 4 can be adapted to the seal. The hose 7 is a high-pressure resistant hose. The air pressure tank 8 has a low-pressure tank and a medium-pressure tank. During use, seals are randomly sampled and placed through the air pressure pipe 4. The screw motor 6 on one side of the air pressure pipe 4 starts and drives the screw 5 to rotate. The air pressure pipe 4 is connected to the test tube 9. The air pressure tank 8 is started, and air pressure enters the air pressure pipe 4 through the hose 7, reducing the shortcomings of previous seal testing.

[0026] Insufficient consideration of different pressures leads to incomplete testing and inspection, resulting in problems during actual use, quality issues, and a lack of timely adjustments, impacting future sales reputation and production output. This new method achieves a more comprehensive simulation of application scenarios through testing under different pressures, providing more thorough testing of seals, demonstrating greater responsibility to customers, and improving production quality. The pressure sensor 10 operates, and the display screen 3 shows the results, reducing the risks of oversights caused by manual inspection in previous tests. The lack of a convenient test result display method also reduces the likelihood of errors in manual analysis, leading to missed defects and incorrect quality analysis, resulting in production issues and severely impacting subsequent use. The pressure sensor 10 enables more accurate testing of seal quality, providing more scientific and accurate results, demonstrating greater responsibility for production quality, and significantly improving... To enhance the practicality of the device, after testing, the seal is removed and placed on the conveyor belt 12, then operated by the conveyor motor 13. This reduces the need for manual step-by-step operation, which was complex, time-consuming, and labor-intensive, and also mitigated the inherent risks of testing, such as injury. The automatic operation via the conveyor belt 12 significantly improves personnel safety and ensures more stable and comprehensive testing with more scientific and complete results, greatly enhancing the device's practicality. Furthermore, the partition plate 14 eliminates the lack of consideration for segmentation in previous multi-test methods, which led to mixed test results, severely impacting quality analysis and affecting overall production quality and costs. The partition plate 14 separates different areas, greatly reducing external influences and making test results more scientific and reasonable, further enhancing the device's practicality.

[0027] like Figure 3 and Figure 4As shown, in this embodiment, the test tube 9 has an internal cavity that can be adapted to the air pressure tube 4. The number of conveyor belt groups 12 is four. The interior of the test chamber 11 is divided into a low-pressure zone and a medium-pressure zone. The surface of the partition plate 14 is coated with a high-temperature and corrosion-resistant coating. The heating plate 15 can adjust the temperature. One side of the test chamber 11 has an elbow that can be adapted to the gripper 16. An air filter box 17 is inserted into the lower surface of the test chamber 11. An oil tank 18 is fixedly connected to one side of the test chamber 11. The oil tank 18 can be exposed to the outside environment. The oil supply device is adapted to the following configuration: a small oil pump 19 is inserted inside the oil tank 18; an oil pipe 20 is inserted at one end of the small oil pump 19; a small-dose nozzle 21 is inserted at the other end of the oil pipe 20; a large oil pump 22 is inserted inside the oil tank 18; the small-dose nozzle 21 is an atomizing nozzle; a thick oil pipe 23 is inserted at one end of the large oil pump 22; a large-dose nozzle 24 is inserted at the other end of the thick oil pipe 23; the thick oil pipe 23 is made of corrosion-resistant PC material; a water tank 25 is fixedly connected to one side of the detection box 11; and the water tank 25 is internally connected to... A water pump 26 is provided, with a water pipe 27 connected to one side of the pump and a flushing drain 28 connected to one end of the pipe 27. The water tank 25 is compatible with an external water supply device. During use, the small oil pump 19 operates, and the oil inside the oil tank 18 enters the small-dose nozzle 21 through the oil pipe 20, atomizing it and entering the low-pressure and medium-pressure zones. The large oil pump 22 operates, and the oil inside the oil tank 18 enters the large-dose nozzle 24 through the thick oil pipe 23, atomizing it and entering the low-pressure and medium-pressure zones. This reduces the lack of comprehensive consideration in the testing environment of seals in previous mechanisms, which resulted in incomplete test results for a few items, making subsequent use more prone to problems and causing personnel to analyze them more one-sidedly, greatly limiting the application scenarios and seriously affecting future sales and use. This significantly reduced production volume and increased costs. By analyzing the corrosion of seals under low and medium pressure and different dosages of atomized oil, the mechanism's diversity is greatly improved, and its testing structure is made more comprehensive.A better understanding of the finished product quality and more accurate adjustments to subsequent processes significantly improve the practicality of the mechanism. The operation of the heating plate 15 reduces the previous lack of testing on the high-temperature flame-retardant function of seals, which led to problems such as seal breakage when used in high-temperature environments due to insufficient consideration of this aspect. In severe cases, this resulted in equipment damage and personnel injury. High-temperature flame-retardant testing under different conditions allows for a more accurate understanding of its performance, better positioning for future applications, and more precise adjustments to subsequent production processes, greatly enhancing the practicality of the device. The operation of the water pump 26 sprays water from the water tank 25 through the water pipe 27 and the flushing drain 28, reducing the previous lack of consideration for residual corrosive oil on the seal surface after testing. This prevented corrosion during subsequent testing, which could lead to equipment damage and increased costs. The flushing drain 28 ensures a cleaner surface, greatly reducing corrosion, protecting the mechanism, lowering usage risks, and significantly improving the safety of the mechanism. By using the gripper 16, the previous danger of handling the seal with a small amount of residue remaining on the surface is reduced. The gripper 16 effectively reduces the risk of injury to personnel and greatly improves the practicality of the mechanism. The gripper 16 places the seal on the air pressure pipe 4, and the lead screw motor 6 on one side of the air pressure pipe 4 drives the lead screw 5 to rotate. The air pressure pipe 4 is connected to the test pipe 9, and the air pressure tank 8 is activated. Air pressure enters the air pressure pipe 4 through the hose 7. The pressure is continuously increased until the seal breaks. This eliminates the lack of consideration for destructive limit testing in previous mechanisms, which made it impossible to determine the service life range and thus prevented timely replacement. This destructive testing allows for a better understanding of the seal's quality and service life under various usage scenarios, greatly enhancing the practicality of the mechanism.

[0028] The working principle of this practical application is as follows:

[0029] By randomly selecting seals, the seals are placed through the air pressure pipe 4. The lead screw motor 6 on one side of the air pressure pipe 4 drives the lead screw 5 to rotate. The air pressure pipe 4 is connected to the test pipe 9. The air pressure tank 8 is activated, and air pressure enters the air pressure pipe 4 through the hose 7. The pressure sensor 10 operates, and the results are displayed on the display screen 3. After the test is completed, the seals are removed and placed on the conveyor belt assembly 12. The conveyor motor 13 is activated, and the seals are operated through the partition plate 14 and the small oil pump 19. The oil inside the oil tank 18 enters the small-dose nozzle 21 through the oil pipe 20, where it is atomized. Entering the low and medium pressure zones, the large oil pump 22 operates, and the oil inside the oil tank 18 enters the large dose nozzle 24 through the thick oil pipe 23. It is atomized and enters the low and medium pressure zones. Through the operation of the heating plate 15, the water pump 26 operates to spray the water inside the water tank 25 through the water pipe 27 and the flushing drain 28. It is placed in the air pressure pipe 4 by the gripper 16. The lead screw motor 6 on one side of the air pressure pipe 4 starts and drives the lead screw 5 to rotate. It is connected to the test pipe 9 through the air pressure pipe 4. It is started by the air pressure tank 8. The air pressure enters the air pressure pipe 4 through the hose 7. The pressure is continuously increased until the seal breaks.

[0030] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An oil resistant flame retardant NBR seal test rig comprising a tank (1) characterised in that: The upper surface of the tank box (1) is fixedly connected with a test box (2), the upper surface of the test box (2) is fixedly connected with a display screen (3), the inside of the test box (2) is slidably connected with an air pressure pipe (4), one side of the air pressure pipe (4) is threadedly penetrated by a lead screw (5), one end of the lead screw (5) is inserted with a lead screw motor (6), one end of the air pressure pipe (4) is inserted with a hose (7), one end of the hose (7) is inserted with an air pressure tank (8), the inside of the test box (2) is fixedly connected with a test tube (9), the inside of the test tube (9) is fixedly connected with a pressure sensor (10), one side of the tank box (1) is fixedly connected with a detection box (11), the inside of the detection box (11) is rotatably connected with a conveying belt group (12), one side of the conveying belt group (12) is inserted with a conveying motor (13), the inside of the detection box (11) is fixedly connected with a partition plate (14), the inside of the detection box (11) is fixedly connected with a heating plate (15), one side of the detection box (11) is clamped with a jaw (16).

2. The oil resistant flame retardant NBR seal test mechanism of claim 1, wherein: The upper half of the air pressure pipe (4) can be matched with a sealing element, the hose (7) is a high-pressure resistant hose, and the air pressure tank (8) has a low-pressure tank and a medium-pressure tank.

3. The oil resistant flame retardant NBR seal test mechanism of claim 1, wherein: A cavity is formed in the inside of the test tube (9) and can be matched with the air pressure pipe (4), the number of the conveying belt group (12) is four, and the inside of the detection box (11) is divided into a low-pressure area and a medium-pressure area.

4. The oil resistant flame retardant NBR seal test mechanism of claim 1, wherein: A high-temperature-resistant and corrosion-resistant coating is arranged on the surface of the partition plate (14), the heating plate (15) can adjust the temperature, and one side of the detection box (11) is provided with an elbow and can be matched with the jaw (16).

5. The oil resistant flame retardant NBR seal test mechanism of claim 1, wherein: The lower surface of the detection box (11) is inserted with an air filter box (17), one side of the detection box (11) is fixedly connected with an oil tank (18), and the oil tank (18) can be matched with an external oil supply device.

6. The oil resistant flame retardant NBR seal test mechanism of claim 5, wherein: A small oil pump (19) is inserted in the inside of the oil tank (18), one end of the small oil pump (19) is inserted with an oil pipe (20), one end of the oil pipe (20) is inserted with a small-dose spray head (21), a large oil pump (22) is inserted in the inside of the oil tank (18), and the small-dose spray head (21) is an atomizing spray head.

7. The oil resistant flame retardant NBR seal test mechanism of claim 6, wherein: One end of the large oil pump (22) is inserted with a thick oil pipe (23), one end of the thick oil pipe (23) is inserted with a large-dose spray head (24), and the thick oil pipe (23) is made of corrosion-resistant pc material.

8. The oil resistant flame retardant NBR seal test mechanism of claim 1, wherein: One side of the detection box (11) is fixedly connected with a water tank (25), a water pump (26) is inserted in the inside of the water tank (25), one side of the water pump (26) is inserted with a water pipe (27), one end of the water pipe (27) is inserted with a flushing row (28), and the water tank (25) can be matched with an external water supply device.

Citation Information

Patent Citations

  • Sealing element testing device

    CN217358893U