What are the differences between X-type seals and O-type seals?
Total fluid leakage from equipment? Here’s the difference between X-type seals and O-rings. Industrial equipment often leaks fluid and requires frequent rework? Most of the time, it’s because the wrong seal was chosen! Many people can’t tell the difference between X-type seals and O-rings, but in fact, there’s a big difference between the two. Choosing the right one—X-type seals—can save you a lot of trouble.
There’s a factory in Zhejiang that manufactures heavy machinery. They used to use O-rings for high-pressure piston pumps at 31.5MPa. Just repairing fluid leaks cost over 20,000 yuan every month, and they were also worried about non-compliance due to hydraulic oil leaks. After replacing them with X-type seals, the leakage problem disappeared completely. Its cross-section is X-shaped, with four “lips” that can tightly fit the sealing surface. Its extrusion resistance is 30% stronger than that of O-rings. Even if the pressure fluctuates, it can still seal tightly, allowing the equipment to run continuously for 60 days without maintenance, whereas before it could only last 15 days.

Another example is a new energy vehicle parts factory in Shandong. After replacing the seals in their servo cylinders with X-type ones, the machine’s friction was reduced by 20%, and it didn’t get as hot. The frequency of replacing seals decreased from once every 3 months to once every 8 months, saving 60% of maintenance costs a year. Moreover, during installation, X-type seals are not as prone to twisting as O-rings. There were almost no errors during production line installation, and the qualification rate increased from 85% to 99.5%.
Whether it’s hydraulic pipelines in mining machinery, battery cooling systems in new energy vehicles, or pipelines carrying food fluids, compared with traditional O-rings, X-type seals can withstand high pressure, have low friction, and are easy to install. Now, many devices have chosen them. Does your equipment also have problems with fluid leakage and high maintenance costs? Tell us about your equipment’s pressure, the medium used, and its operating conditions, and we can help for free. Click on the online customer service or call us to get a suitable sealing solution!
