About Hydraulic pipe joint seals
Hydraulic joint is one of the common connection methods in hydraulic components, sealing is the key of hydraulic joint and the principle of sealing is mainly based on deformation and friction two aspects.
Deformation refers to the characteristics that the shape of some materials can be restored under the condition that the material itself has resilience after the shape change. Under normal circumstances, the sealing surface of the hydraulic joint is made of elastic materials (such as rubber), which has good elasticity and plasticity. During sealing, under the action of liquid pressure, the sealing surface will be deformed to a certain extent, so that the sealing surface between the joints is closely fitted, so as to achieve the sealing effect.
Friction refers to the force between the contact surfaces to resist relative motion, and its size is related to the force of mutual contact, the nature of the material, and the roughness of the surface state. When the relative movement of the hydraulic joint occurs during work, such as the friction is large enough, it will cause the sealing surface to fit tightly, so as to achieve the sealing effect.
In addition to the two factors of deformation and friction, the high precision manufacturing and precision machining technology of hydraulic joints and additional means such as coating sealants and gaskets can also improve the sealing effect.
Product introduction
| Product Name | Hydraulic pipe joint seals |
| Product Description | The pipe joint connects the hydraulic pipeline with the steering gear, steering pump and other working machines, and its sealing structure type and matching tolerance assembly process have a direct impact on the sealing of the hydraulic system. |
| Capabilities Applied/Processes | Prevent system leakage |
| Color | Black, white, blue, yellow, etc |
| Material Used | HNBR |
| Benefits | Good oil resistance and aging resistance |
| Hardness | 50-90(Shore A) |
| Temperature | 20~125°C |
| Industry for Use | Hydraulic Industry |
Common problems and solutions
Hydraulic pipe joint seals once the problem, often lead to the failure and failure of the hydraulic system, so the industry institutions for the hydraulic pipe joint seals technology research is increasingly in-depth and extensive. Here are some common problems and how to solve them:
Step 1 Leak
Leakage of hydraulic joint is a common phenomenon, the main reasons may be too large clearance of sealing surface, insufficient friction, sealing surface wear, sealant failure and so on. For this situation, common solutions include: replacing the seal, coating the sealant, using elastic deformation materials, etc
2. Aging of seals
The aging of Hydraulic pipe joint seals is a problem encountered in every industry, especially in harsh working environments, and the aging problem of seals is more frequent. Once aging, the sealing effect of the seal will degrade, resulting in leakage of the system. In view of this situation, the usual solutions include: replacing the aging seal, coating the sealant, and fine machining the sealing surface
Step 3 Wear and tear
When the sealing surface of the hydraulic joint is worn, the sealing effect will be affected. This situation is usually caused by excessive wear of the sealing surface, insufficient material strength and other reasons. The solutions that can be taken include: replacing the new sealing surface, improving the strength of the material, and fine processing of the sealing surface
4. Misloading
If the hydraulic joint is installed improperly, it will also lead to leakage or poor sealing effect. For example, if the sealing surface is not cleaned during installation or the installation torque is not enough, it will lead to loose joints or leakage problems. For the solution to this situation, we should pay attention to cleaning the sealing surface, and the connector should be connected step by step when installing.
The main performance of Hydraulic pipe joint seals
1. Good wear resistance
2. It has good adhesion and aging resistance
3. Outstanding high strength and tear resistance
4. Good physical and mechanical properties
5. Resistant to acid, alkali and salt, can work in the lubricating oil and fuel oil medium with strong corrosive additives
Other characteristics of Hydraulic pipe joint seals
The pipe joint is a detachable connection between the oil pipe and the oil pipe, the oil pipe and the hydraulic component, and it should meet the requirements of convenient assembly and disassembly, strong connection, strong sealing, small shape and size, large oil flow ability, and good processing technology of small pressure loss. According to the connection method of the tubing and the pipe joint, the pipe joint is mainly welded type, flaring type, clamping type and other forms of each form of pipe joint. According to the number and direction of the joint, there are straight, right Angle, tee and other types; The connection mode with the body is threaded connection, flange connection and so on.
