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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.

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LNG Seals
When the LNG seal is seated in the gland, the spring is under compression, applying force on the gland sealing
surfaces and creating a tight barrier to prevent gas or fluids from leaking. The spring also
provides resiliency to compensate for seal wear, gland misalignment, or eccentricity.
While spring force provides adequate force for sealing at low pressure, at high pressure
the system pressure augments the spring force to provide an even tighter seal.
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POM Wear Ring
Glass filled POM wear ring, offers high bearing load capacity over a broad range of temperatures. The function of the wear ring is to guide the piston and piston rod of a hydraulic cylinder, as well as to withstand arising side loads. At the same time, it prevents any metal-to-metal contact, which will damage and score the surfaces and eventually cause seal damage, leakage and component damage.

This wear ring is capable of withstanding high side loads and preventing metal-to-metal contact between the piston and the bore or the rod and the gland.





Item NO.:                              POM


Payment:                               T/T


Product Origin:                   China


Shipping Port:              Shenzhen


Order(MOQ):                         50




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Back Up Rings
The PTFE back-up rings are proven components used for sealing both low and high pressure systems. Any system pushing the pressure limits on an elastomer seal, back-up rings are an inexpensive option to increase seal pressure capabilities or increase radial extrusion gaps behind the seal.
The back-up rings come standard in Virgin PTFE but can be made from any filled PTFE compound to increase the pressure capabilities.

PEEK,POM, Nylon back up ring are also made.


Item NO.:                              BUR


Payment:                               T/T


Product Origin:                   China


Shipping Port:              Shenzhen


Order(MOQ):                         50

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Rod step seal
 The rod step seal is composed of a PTFE rod seal ring and an O-ring. The PTFE filled sliding ring has low friction characteristics and can be used in applications with poor lubrication.
The Rod step seal is especially suitable for control cylinders, servo systems, machine tools, construction machines, and chemical industry applications.
Different PTFE material sliding rings and rubber material O rings can be selected for different applications to meet different fluid media and temperature ranges.
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Phenolic Wear Ring
The phenolic fabric wear ring is made of special desalted white fabric impregnated with phenolic resin by heating and rolling, which is processed by turning. It has high mechanical properties, good oil resistance, low water absorption, and high wear resistance.
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Double acting rod seal
Product Overview
The Double Acting Rod Seal, also known as a dual action rod seal, is engineered to deliver bidirectional sealing performance in hydraulic and pneumatic cylinders. It ensures tight sealing during both the extension and retraction strokes, making it an ideal solution for double acting cylinder applications that demand consistent pressure control and zero leakage.    
Whether used in high-pressure hydraulic systems or fast-moving pneumatic equipment, this double-lip rod seal provides reliable and durable sealing under dynamic conditions. 

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PTFE Bronze Wear Ring
The PTFE bronze wear ring is precision-machined to guide a rod or piston to avoid metal-on-metal contact in dry and lubricated applications. A gap is intentionally added to the wear ring to allow fluid flow to and from the seal gland and prevent pressure trap or hydrolock between the seal and wear ring. In the case where the cut ends of the ring touch due to the high thermal expansion of PTFE, an optional radius groove is added on both ends to continue to allow fluid flow.
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O ring
O ring is a type of seals with solid rubber material or PTFE and an O-shaped cross section. Because its cross section is O-shaped, it is called O-shaped rubber ring. It is one of the most widely used hydraulic and pneumatic transmission systems.
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Heavy-Duty Rod Seal
This heavy-duty hydraulic rod seal is engineered for high-performance sealing in large-diameter, high-pressure environments. Featuring a PTFE-filled sealing element and a profiled energizer, it ensures reliable performance in systems with wide extrusion gaps, short strokes, and oscillating motion (dithering).
Its ultra-low friction and anti-extrusion properties make it ideal for critical hydraulic applications such as rolling mills, injection molding machines, and hydraulic presses.
View all hydraulic rod seals
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PTFE Bronze Guide Strip
The PTFE bronze guide strip is to guide a rod or piston to avoid metal on metal contact in dry or lubricated applications. A gap should intentionally be calculated in the cut length to allow fluid flow to and from the seal gland and prevent pressure trap or hydrolock between the seal and wear ring.
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Spring Energized inside face seals
Face Seals are typically used in static sealing applications. Inside Face Seals contain pressure inside a vessel and are often used as lid seals or in pipe flange fittings. A PTFE Face Seal offers advantages over traditional O-Rings in terms of pressure handling, chemical compatibility, and operating temperature range. Use in cryogenic applications is common.