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Hydraulic U Cup Rod/Piston Seals

Hydraulic u cup seals are mainly known for their design, shaped like the letter “U” in cross-section. U seals’ main function is to prevent medium leakage and withstand certain pressure and temperature changes. They achieve the sealing effect by pressing the lip of one side of the U-shape tightly against the sealing contact surface through the pressure generated by the liquid or gas.

TYS is a u cup seals supplier that offers metric hydraulic u cup seals, including piston cup seals and u cup rod seal,they are made of polyurethane 、nitrile or proprietary PTFE materials, with the advantages of high resistance to extrusion deformation, high wear resistance and not easy deform, which can adapt to dynamic and static sealing requirements and ensure high sealing performance.

Choose the u ring seals and loaded u cup seals for efficient system operation you need from the following products:

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Product Categories

Piston Seals

Rod Seals

Wiper Seals

Wear Rings&Guide Rings

Back Up Ring/Gaskets

Floating Seals

Rotary Seals

Custom Hydraulic Seals

Hydraulic Seal Kits

U Cup Rod Seal

When the medium in the system is pressurized, the U-sealing lip is close to the piston rod. The sealing ability is more vital as the pressure increases. U cup rod seals are mainly used in hydraulic cylinders and pneumatic cylinders. When the piston rod reciprocates, it is sealed to prevent leakage of fluid medium. U cup rod seals are primarily made of polytetrafluoroethylene/polyurethane/nitrile or elastic materials. The specific material is selected according to the actual application environment. Choose TYS to choose a tailor-made U cup rod seal for your particular needs.

U Cup Rod Seal MPA

U Cup Rod Seal MPB

U Cup Rod Seal MPR

Spring U Cup Rod Seal RVA

Piston Cup Seal

Pu Loaded U Cup Piston Seals MPS

Application Fields

Hydraulic u cup rod and piston seals widely used in:

Construction
Automobile
Machinery
Shipbuilding
Chemical Equipment
Agriculture
Automation Equipment
and other fields.

Advantages and Disadvantages of U-cup Combination Seals:

Advantages

Good sealing performance

U-cup combination seals have good sealing performance and can maintain excellent sealing effects for a long time

Strong anti-deformation ability

Can adapt to different working environments and working conditions

Easy to install and maintain

U packing seal can improve equipment efficiency and reduce working costs.

Disadvantages

Relatively short service life

Requires regular replacement to maintain good sealing effects;

High working environment requirements

Cannot be used in special environments, such as extreme temperatures, strong acids and alkalis, and other chemicals;

High cost

Compared to other seals, the price is more expensive.

Installation U Cup Rod and Piston Seal Method

Ensure that the sealing surface is neat and clean and lubricate as necessary;
Insert the U seal into the groove of the sealing surface; be careful not to overstretch or deform it, and ensure that it is inserted completely and well sealed.
Check and test whether the installed U cup seal is correct.

Precautions Note

When using cup rod/piston seals for hydraulic cylinders, you need to pay attention to the following points:

Avoid using them in suspended or partially bent parts to avoid poor sealing effect or damage to the seals;
Check the use of the seals regularly. If they are found to be damaged or aged, they should be replaced in time;
When used in high-temperature or high-pressure environments, high-temperature or high-pressure resistant seals that can withstand these conditions should be selected.

U-cup combination seals are widely used in various mechanical equipment and engineering fields. They have good sealing performance and elastic deformation ability and can adapt to different working environments and conditions. However, to maintain a good sealing effect and extend the service life, you must consider the installation method and precautions.

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