Jul. 28, 2025
In hydraulic systems, seals play a crucial role, especially dust proof seals. Hydraulic systems often operate in high-pressure and high-temperature environments and require long-term stable operation. Dust proof seals not only help maintain good sealing performance in the hydraulic system but also effectively block external dust and impurities from entering, thereby preventing system contamination and malfunctions.
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The most direct function of dust proof seals is to prevent dust, sand particles, and other impurities from entering the hydraulic system. Dust proof seals effectively block these harmful substances by sealing the passages between the external environment and the internal system, ensuring the cleanliness of the interior of the hydraulic system and the purity of the hydraulic fluid.
Seals in hydraulic systems often come into contact with hydraulic oil, pressure, and high-temperature environments during operation. The presence of dust proof seals not only prevents the intrusion of external dust but also effectively avoids seal damage caused by changes in the external environment. Dust proof seals can provide additional protection, extending the service life of other seals and reducing maintenance and replacement costs due to wear.
Hydraulic systems typically need to operate under high pressure. Any external contaminants entering the system can cause pressure fluctuations or leaks, affecting the system's efficiency. Dust proof seals prevent external air and contaminants from entering the hydraulic system by effectively sealing the connection between the internal system and the external environment, thus maintaining stable system pressure.
The stable operation of the hydraulic system is closely related to the condition of the seals. Dust proof seals can effectively prevent the intrusion of dust and impurities, thereby reducing contamination of the hydraulic oil and wear of the components. This protective function directly extends the working life of the hydraulic system, reducing the need for frequent maintenance and replacement of parts. In this way, dust proof seals help the system maintain a low failure rate and a longer service cycle.
Good sealing performance is crucial for the efficient operation of hydraulic systems. Dust proof seals ensure the normal operation of hydraulic components by maintaining the internal cleanliness of the hydraulic system and the purity of the hydraulic fluid, preventing jams or blockages caused by contaminants. When components in the system operate without interference from external impurities, they can perform actions more precisely, improving the overall operating efficiency of the system.
In conclusion, dust proof seals play a vital role in hydraulic systems. By preventing external contaminants from entering, protecting seals, maintaining stable pressure, extending system life, and improving working efficiency, they ensure the efficient and stable operation of hydraulic systems.
Dust seal (wiper) , preventing the dust or some particulate matter get into the hydraulic cylinder.
There will be a lay of oil adhere to the rod, the dust and particulates will be bond with oil then taken into the cylinder cause damage to oil cylinder, cause leakage, therefore, we need to set a seal to keep the particulates away.
The DEF dust wipers are an outstanding choice for light and medium duty hydraulic and pneumatic applications. The slotted heel design prevents pressure traps from forming between the rod seal and wiper. Broad tooling availability, up to 30', makes the seal a good choice for large rod diameters. the snap-in design is oversized for a snug fit and excellent stability. This makes the seal a great all-round wiper in economical package ;)
The dust seal usually made of the rubber like NBR, PU, PTFE. There are many kind of type:
1) DPS
The performance characteristics of DPS dust seals are following:
·External circle positioning is reliable
·Good scraping and dusting effect
·The dust ring can be used over a wide temperature range
·There is no backpressure between the sealing ring and the dust ring
2) DRH \ LBH
Contact us to discuss your requirements of Industrial Mining Supply. Our experienced sales team can help you identify the options that best suit your needs.
The performance characteristics of HRH \ LBH dust seals are following:
·Good scraping and dusting action, and it can prevent the remaining oil film on the piston rod extension.
·Good scraping and dusting effect
·The dust ring can be used over a wide temperature range
3) ADA
The performance characteristics of ADA dust ring are basically the same as that of
DRH \LBH type, with only some changes in structure.
4) KDI
KDI applicable to oil pressure, when the medium is mineral oil, the applicable temperature range is -35 ~ +100℃; when the medium is water and gas, the applicable temperature range is ≤70℃, its characteristics are as follows:
·Good interference fit
·There is no interstice to the outside between the piston rod and the dust ring
5) DPE
There are two NBR O-ring with a PTFE ring make up the DPE.
It is used to improve the overall sealing performance, and the joint use with the rod sealing ring is better.The characteristics are as follows:
·Excellent adjustment and positioning ability at work
·High functionality guarantees that all operations can be accommodated in a short period of time
·High wear resistance
·Low friction coefficient, no slippage
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