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Hydraulic Seals

Hydraulic seals are constructed from polyurethane, rubber, or PTFE.Hydraulic seals are widely used in hydraulic cylinders of excavators, bulldozers, cranes, and many other types of heavy equipment.

Dynamic seal and static seal of hydraulic seals Classification. The portfolio covers piston seals, rod seals, seals buffer, and wiper seals along with guide rings and O rings.

Hydraulic seals

Spring Energized Seals

Spring energized seals use a metal spring to apply constant force to the sealing lip, ensuring consistent performance even under variable pressure and temperature. The seal body is typically made from PTFE or other high-performance polymers, offering low friction and chemical resistance. Spring energized seals are ideal for demanding applications such as cryogenics, aerospace, chemical processing, and high-speed rotary systems. Their design allows reliable sealing in dynamic, static, vacuum, and aggressive media environments.

Oil & Gas Seals

Oil & gas seals are designed to perform under high pressure, extreme temperatures, and aggressive media. They prevent leaks in critical systems and ensure equipment reliability. Materials like FKM, HNBR, PTFE, and PEEK are commonly used for their resistance to heat, chemicals, and wear. Oil & gas seals are widely used in downhole tools, valves, pumps, compressors, and subsea equipment. These seals are essential for maintaining safety and sealing integrity in exploration, drilling, and refining operations.

Lng seals

LNG seals are engineered for cryogenic temperatures, often below -160°C, where standard materials fail. These seals are made from PTFE, modified PCTFE, or elastomers specially formulated for low-temperature flexibility and chemical resistance. LNG seals are used in pumps, valves, loading arms, and transfer systems within LNG storage, transport, and processing. They ensure long-term sealing reliability in liquefied natural gas operations, preventing leakage and maintaining system integrity under thermal shock and pressure variations.

Out-of-Stock
Rod U cup seal
XHH Seals offers a high-performance Rod U-Cup Seal engineered for superior sealing in moderate to high-pressure hydraulic applications. Featuring an advanced asymmetrical lip design, this dynamic seal maintains optimal contact pressure to ensure long-lasting performance and zero-leak reliability. Manufactured from high-quality materials and available in standard or custom diameters (6 mm to 2 meters), our rod seals are ideal for both OEM use and hydraulic cylinder repair.
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Spring Energized outside face seals
Face Seals are typically used in static sealing applications. Outside Face Seals are often used to keep environmental media out of an exposed joint, hinge point, or pipe fitting. A PTFE Face Seal offers advantages over traditional O-Rings in terms of pressure handling, chemical compatibility, and operating temperature range. Use in cyrogenic applications is common.
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Double-Lipped Rod U-Cup Seal
 XHH Seals offers a premium Double-Lipped Rod U-Cup Seal engineered for high-efficiency sealing in moderate to high-pressure hydraulic systems. This advanced seal design features an asymmetrical profile with a secondary sealing lip that enhances sealing performance while providing an additional barrier against contamination. It is widely used as a primary rod seal in rugged environments across industrial and mobile hydraulic equipment.
Available in both standard and custom sizes, this versatile seal is machined or molded from high-grade materials to meet the demands of modern hydraulic systems.
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CANTED COIL SPRING ENERGIZED PISTON SEAL
Canted Coil Spring Seals employ a specialty wound wire spring installed in a polymer jacket. The canted coil is unique in the sealing industry because of its semi-linear load curve. As an engineered loading device, canted coil springs display a very constant load over a large deflection range. This feature allows Canted Coil Spring Seals to operate in friction sensitive applications like HPLC, encoders and flap actuators with consistent performance. Seals used in battery operated devices utilize these seals – minimizing seal friction and optimizing battery life. On the other end of the spectrum, Canted Coil Spring Seals are used with heavy load springs for use in highly viscous media such as epoxies and urethanes. 
Out-of-Stock
Energized Symmetrical Rod U-Cup Seal
Energized Symmetrical Rod U-Cup Seal is a popular and versatile design with a wide range of applications. The design features a primary sealing material that is further energized by an elastomeric element, frequently an O-Ring. This allows a high sealing force to be created at the sealing lips or allows the use of seal materials that might otherwise have insufficient compression set resistance. This versatility allows this seal to be used across many markets. Manufactured in a variety of materials and sizes from 6 mm up to 2100 mm in standard or custom diameters.
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CANTILEVER SPRING ENERGIZED PISTON SEAL
Cantilever Spring Seals make use of a V shaped spring embedded in a polymer jacket. At installation, the V shape of the spring is compressed, providing sealing energy to the seal jacket ensuring a positive seal.  They are common replacements when rubber u-cups fail due to chemical attack, extreme temperature range, friction concerns and wear issues. Cantilever Spring Seals are best suited for reciprocating applications such as shocks, hydraulic cylinders, pumps and compressors. The shape of the spring concentrates load on the front of the seal, which makes this design also suitable for use as environmental excluders and for applications requiring scraping of viscous media. As an additional option, the spring cavity area can be filled with silicone for FDA clean-in-place applications.
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Reinforced Symmetrical Rod Seal U-Cup
The R007 Series is a heavy-duty polyurethane seal with multiple features that include a double-lipped U-Cup design, an internal O-ring energizer and a reinforced backup ring on the heel. This seal is ideal for pressure spikes and large extrusion gaps common in mining applications.



Item NO.:                             R007


Payment:                               T/T


Product Origin:                   China


Shipping Port:              Shenzhen


Order(MOQ):                         50

Out-of-Stock
HELICAL SPRING ENERGIZED PISTON SEAL
Helical Spring Seals are comprised of a wound ribbon metal spring installed in a polymer jacket. This helical shape spring affords a relatively high load versus deflection range resulting in a seal product that can provide very tight sealing. As a highly loaded product, Helical Spring Seals should be considered when dynamics are very slow or static. Examples are in stems seals and in cryogenic valves where additional force is required to overcome thermal effects.
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Glyd ring Piston Seal
The P001 Series standard-duty piston seal is a low-friction design, consisting of a PTFE-filled seal and an O-ring energizer. It is designed for double-acting cylinders in challenging applications, where low friction and high wear resistance are needed.



Item NO.:                             P001


Payment:                               T/T


Product Origin:                   China


Shipping Port:              Shenzhen


Order(MOQ):                         50

Out-of-Stock
CANTED COIL SPRING ENERGIZED ROD SEAL
Canted Coil Spring Seals employ a specialty wound wire spring installed in a polymer jacket. The canted coil is unique in the sealing industry because of its semi-linear load curve. As an engineered loading device, canted coil springs display a very constant load over a large deflection range. This feature allows Canted Coil Spring Seals to operate in friction sensitive applications like HPLC, encoders and flap actuators with consistent performance. Seals used in battery operated devices utilize these seals – minimizing seal friction and optimizing battery life. On the other end of the spectrum, Canted Coil Spring Seals are used with heavy load springs for use in highly viscous media such as epoxies and urethanes. 
Out-of-Stock
Single-Acting Piston Seal
The P002 Series Single-Acting Piston Seal is a low-friction design, consisting of a PTFE filled seal and an O-ring energizer. It is designed for single-acting cylinders in challenging applications, where low friction and high wear resistance are needed.



Item NO.:                             P002


Payment:                               T/T


Product Origin:                   China


Shipping Port:              Shenzhen


Order(MOQ):                         50