Your Superior-Quality Hydraulic Seal Kits Manufacturer in China

Xugong KS Provides You with the Most Long-Lasting Hydraulic Seal Kits in the Market.

  • High-Pressured for Long Periods
  • Anti-Leakage of Fluids
  • Aftermarket and Genuine from the Best Brands
  • Fast and Worldwide Shipping
  • OEM and ISO certified

XuGong KS Hydraulic Seal Kits Quality Certification

  • ISO9001
  • KS CE
  • SGS
  • ISO 9001

Xugong KS Top Sales Hydraulic Seal Kits

Hydraulic Seal Kits for CAT

70 mm seal kit from Xugong KS hydraulic seal kits manufacturers.

Hydraulic Seal Kits for Hitachi

Hydraulic seal kits O ring from Xugong KS hydraulic seal kits supplier.

Bestselling Hydraulic Seal Kits

Xugong KS hydraulic seal kits distributor built superior quality PTFE seal kits.

Hydraulic Seal Kits for Caterpillar

Suitable for Caterpillar and CAT 32B available from Xugong KS hydraulic seal kits manufacturer.

Hydraulic Seal Kits for Volvo

Perfect for EC360 and CAT320 excavators from Xugong KS hydraulic seal kits distributor.

Hydraulic Seal Kits Universal

Xugong KS hydraulic seal kits manufacturer made the most compatible product.

Hydraulic Seal Kits HIT-4206343

High tolerance hydraulic seal kits from Xugong KS hydraulic seal kits manufacturer.

Hydraulic Seal Kits Wholesale

Long-lasting and quality rubber made from Xugong KS hydraulic seal kits distributor.

Hydraulic Seal Kits for WA470-1

Heavy-duty and reliable lift hydraulic seal kits from Xugong KS hydraulic seal kits supplier.

Why Should You Choose Xugong KS Hydraulic Seal Kits Distributor?

Hydraulic seal kits are used to prevent leakage from the cylinders. Xugong KS hydraulic seal kits are able to withstand high pressures, extreme temperatures and transverse forces within the cylinder.

The main function of Xugong KS hydraulic seal kits goes far beyond preventing fluid leakage. Xugong KS hydraulic seal kits are specially engineered based on OEM and ISO standards.

Get your Xugong KS hydraulic seal kits today!

hydraulic seal kits video banner

Xugong KS Hydraulic Seal Kits Manufacturer

Raw Materials Inspection - hydraulic seal kits
Raw Materials Inspection
From the start, Xugong KS hydraulic seal kits manufacturer checks the quality of our hydraulic seal kits to avoid later issues.
Assembly - hydraulic seal kits
After molding, Xugong KS engineers gather all the high quality together for testing and quality control process for our hydraulic seal kits.
Testing - hydraulic seal kits
Xugong KS hydraulic seal kits quality control team ensures the thickness and quality of the hydraulic cylinder seal kits made.
Packing - hydraulic seal kits
Xugong KS hydraulic seal kits are packed in air-tight plastic and then in boxes. We can ship your orders anywhere in China and around the world.

XuGong KS Hydraulic Seal Kits Manufacturer Overview

Keep Your Fluids in with Xugong KS Hydraulic Seal Kits

Seals play an important role in hydraulic cylinders. They contain the fluid and prevent the leakage of fluid between components.

Xugong KS hydraulic seal kits manufacturer stocks a wide selection of hydraulic seal kits for your hydraulic equipment. Our top-quality hydraulic seal kits are those recommended and used by industries around the world and will meet your expectations.

Send us your inquiry about our hydraulic seal kits right now!


Get Xugong KS Hydraulic Seal Kits at the Best Price 

Xugong KS hydraulic seal kits will help optimize the performance level of your machine and can allow you to increase your productivity. Our hydraulic seal kits are highly recommended by the experts. Order now

Choose your hydraulic seal kits or talk to one of our hydraulic seal kits experts!


Xugong KS Hydraulic Seal Kits Customer Service

Make sure to get Xugong KS hydraulic seal kits to deal with your machine breakdowns quickly and capably. Xugong KS offers top tier hydraulic seal kits without compromising quality.  Xugong KS hydraulic seal kits are backed by the best customer service.

Just contact us through our 24/7 customer service, and Xugong KS will wholesale you the most suitable hydraulic seal kits.  Xugong KS can provide you with the most accommodating and helpful support you have been asking for.

We are just a click away from giving you the best products and solutions for your hydraulic seal kits.


Get Them Fast with Xugong KS Hydraulic Seal Kits Distributor

Xugong KS hydraulic seal kits manufacturer distributes and exports to more than 50 countries like American, Canada, Chile, Brazil, Mexico, UAE, Kuwait, Oman, Iran, Saudi Arabia, Thailand, Indonesia, and so on. Xugong KS hydraulic seal kits manufacturer ensures you the worldwide distribution of your hydraulic seal kits.

Xugong KS hydraulic seal kits distributor packs your hydraulic seal kits properly and secure it in air-tight bags. You can choose to ship your hydraulic seal kits from our trusted partners like TNT, FedEx, and more. You can also have your hydraulic seal kits via air or sea.

Order high-quality and affordable hydraulic seal kits from Xugong KS hydraulic seal kits manufacturer! The best here in China to your construction doorstep!


Hydraulic Seal Kit – The Definitive FAQ Guide


The Hydraulic Seal Kit is designed to solve seal problems in a trouble-free manner. It includes the most widely used designs to help repair or prevent more significant and more costly equipment failures. The purpose of the hydraulic seal kit FAQ Guide is to make a user understand what a hydraulic seal kit is. This guide contains information on shaft seals, dust seals, guide rings, piston seals, wiper seals, and much more.


1. What is a hydraulic seal kit?


A hydraulic seal kit, sometimes just called a seal kit, replaces any worn-out seals in pumps and cylinders that run hydraulics applications. Seals are made from rubber or composite materials to seal the open area between two components. Hydraulic systems in trucks, cars, and off-road construction equipment use seals to prevent leakage while keeping the system operating efficiently.

A hydraulic seal kit is a seal set that includes an assortment of seals and O-rings that are compatible with the specific hydraulic system they have been designed for. They are designed to provide solutions for hydraulic seal applications you may encounter during your day-to-day use of machinery. They allow you to access different sizes of O-rings, a variety of seals, and the spare parts needed to address your hydraulic issues quickly.


2. How to choose the right hydraulic seal kit?


There are several factors to consider while choosing the fitting, hydraulic seal kit. Some of the main things to consider are as follows: The hydraulic seal is an essential element to the operation of hydraulic systems, including actuator seals, control valves, turbochargers, cylinders, pistons, and more.

Different size seals are required based on the type of hydraulic system, whether for a small domestic appliance or large air compressor. Hydraulic seals can be made from several different materials: liquid silicone rubber (LSR) to synthetic rubber (SR) and metals. Choosing the correct seal kit requires knowledge about how each seal performs, their recommended applications, and sizes.


3. What is the role of backup seals in hydraulic seal kits?


Backup seals perform several functions in a hydraulic seal kit. As the name suggests, they “back up” the primary seal, ensuring continuous service in the event of a seal failure. Backup seals can also prevent fluid leaks that could occur due to normal expansion and contraction caused by temperature changes, process fluid contamination.

Role Of Backup Seals In Hydraulic Seal Kit

Backup or backup seals are used when increased pressure is passed through the hydraulics seal kits. The backup seal is located on the opposite side of the primary seal. Backup seals are typically made of materials with a higher crushing strength than standard rubber seals and can be produced with specific profiles for custom applications.


4. What is the role of wear ring seals in hydraulic seal kits?


Wear ring seals in hydraulic seal kits are very important because they contribute directly to the function of the hydraulic system. Their primary purpose is to maintain a close, or better yet, a perfect fit for all components within the sealing surface (hydraulic or pneumatic).


Wear rings also add adequate pressure to the parts inside of the sealing surface. In doing so, wear ring seals help to ensure that fluid cannot leak out of the mating seal faces.

Because they are reliable but straightforward, wear ring seals are typically found on very high-pressure industrial sealing applications. The circular-shaped seal can be mounted on the piston rod, cylinder rod, and body to protect from dirt, dust, oil, or water.


5. What is the role of slide ring seals in hydraulic seal kits?


Slide ring hydraulic seals are installed in a wide range of equipment, including compressors and pumps for various applications. These slide ring seals serve as a buffer between two opposing faces, sealing the areas when parts move relative to each other.

The primary seal design categories are cylindrical, spherical, collapsible/flexible, and toroidal/annular. The variety of shapes and designs provides a solution for virtually any application requiring the sealing capability of an elastomeric material.


The three fundamental functions of slide ring seals in hydraulic seal kits are to create an airtight seal between two different surfaces, prevent a leakage path to contaminants, and isolate the lubricating medium from the high-pressure fluid dynamic shear force.


6. What is the role of shaft seals in hydraulic seal kits?


No matter what type of hydraulic seal kit you have, the most crucial seal components are the shaft seals. When dealing with hydraulic systems exposed to harsh conditions, shaft seals are necessary to ensure that your system is kept in prime condition for many years to come. Hydraulic equipment, such as cylinders used in construction sites and industrial machinery, is often found in areas where the ground is wet.

The constant exposure to water can reduce the lifespan of specific components, primarily if adequate protection is not provided. Shaft seals prevent unwanted leakage from entering or leaving the seal chamber.


The role of shaft seals is to keep a lubricant on both sides of the shaft as it passes through. If shaft seals aren’t correctly sized, they can cause undue wear and improper operation.


7. What is the role of cartridges in hydraulic seal kits?


A cartridge is used in a hydraulic seal kit to protect the plunger or stem from a dirty fluid. The cartridge has an O-ring. Rear leakage is prevented when the stem opens and holds the O-ring tightly against the bore wall. This action creates a seal between the stem and bore. The name “cartridge” comes from its original use: it was loaded into a tube and then inserted into an opening to seal it off from dirt.

A cartridge is an assembly that typically consists of a body, two or more O-rings, and two or more seals. A cartridge is installed into a hydraulic, pneumatic, or another system where it can reside for many years without being removed for service.


This extended service life is one of the primary advantages of a cartridge as contrasted with an assembly that usually is disassembled and reassembled every time the system requires maintenance.


8. What is the role of cushion seal in hydraulic seal kits?


The role of cushion seals in hydraulic seal kits is that they provide a flexible interface between two fixed sealing faces, typically angular contact ball bearing pairs or linear guide units, to isolate the external load from the internal spindle within the mechanical limits of the softer material.


The seals are required to prevent the fluid (oil) and gas leakage for pressure applications and prevent dirt, dust, gases, and other solid matter from entering the system.

They are also used for shafts exposed to chemicals such as oils and acids. The elastomers have a certain degree of elasticity that can withstand the pressure in the sealing system. The cushion seal kits are used for composite elements subjected to high speed and more considerable internal pressures.


9. What is the role of buffer seals in a hydraulic seal kit?


A buffer seal is a component of hydraulic seal kits. They are used for shock absorption or cushioning to protect components from rubbing or damage in a hydraulic system.


Buffer seals are made of elastomers. They come in many different shapes, are designed for other functions, and are categorized by their thickness and materials (Viton, Nitrile, neoprene, urethane, fluoroelastomer).

The seals are categorized into roll-style, profile-style, and four-barrel seals (two of each type shown in the image to the right). Buffer seals are often used as vibration damping elements in hydraulic cylinders. When placed in series with main seals, they make a versatile and economical sealing combination that can improve many types of equipment.


10. What is the role of wiper seals in the hydraulic seal kit?


The wiper seal is primarily tasked with keeping contaminants out of the fluid system. The most common contaminant is sand. Sand is highly abrasive and can wear away the cylinder bore and damage the seal; it cannot tolerate a hydraulic system. Once sand penetrates a system, it can cause major damage to seals and cylinders if not caught immediately.


Contamination occurs when operating the equipment under dirty conditions or when using poor-quality wiper seals; high-quality wiper seals are manufactured with a better ability to keep contaminants out of the sealing area.


The wiper seal may be made of EPDM or Silicon Nitride depending on the contamination levels involved and whether the seal is required to operate in a dry, as opposed to wet condition.


11. What is the role of guide rings in a hydraulic seal kit?


Guide rings help guide the O-ring into place to provide the perfect seal performance. Guide rings are a type of spacer element that is used within a hydraulic or pneumatic sealing system. Guide rings are also known as piston guides, ring silencers, and piston spacers. Hydraulic oil is pressurized. This high-pressure force expands the cross-section of the cylinder that contains the guide ring.


This expansion causes the guide ring to apply axial force on the O-ring, which seals in the channel and ultimately limits the fluid from leaking. Guide rings in hydraulic seals provide a centering function during the installation of a seal. They are typically used when applying seals into grooves on shafts and flanges. Guide rings are also available in hydraulic seal kits to help ensure proper lubrication of the seal components.


12. What is the role of piston seal in a hydraulic seal kit?


The piston seal sometimes called the packing seal, or gland seal is positioned between the piston and the cylinder barrel of a hydraulic pump or motor. The hydraulic seal piston seal aims to contain the fluid within the cylinder barrel and provide a barrier between the liquid and any contaminants. The most common materials used for piston seals in hydraulic seal kits are soft, compressible elastomers that are molded to fit perfectly within the recess of the cylinder barrel.


Another type of material used as piston seals in a hydraulic seal kit is spring steel for applications with intense pressure on all sides. In a hydraulic seal kit, the seal prevents fluid from escaping and ensures cleanliness and hygiene wherever it is used. Valued for its exceptional lubrication properties, it keeps the inner face of the outer cylinder surface clean and smooth.


13. What is the role of O rings in the hydraulic seal kit?


O rings are essential parts of hydraulic seal kits. These are small rubber or synthetic compounds that help to keep the oil inside the cylinders and the outside element away from the machine. There are many different sizes and shapes of these O-rings and other types of seals that can be used. The O-ring material usually comes in Nitrile as it is affordable and offers several qualities, including resistance to aging and abrasion.


Its tight fit and resilience are some other advantages of nitrile rubber over different types of elastomers. The selection of a specific seal can depend on the application size, shape, features, and more. All these factors can determine potential leak points within a system. Therefore the correct seal is chosen based on its orientation and tolerance level.


14. Which material is used in making a hydraulic seal kit?


A variety of materials are used in making hydraulic seals. Primary materials include polyurethane, nylon, PTFE, or rubber. The appropriate materials are selected for the application based on the operating environment and seal service requirements.


Exact seal material, size, shape, and composition will vary depending on part design and flow characteristics. Because some of these parts exhibit corrosive properties, unique elastomeric materials or coatings are used to protect them.


15. How would you define the manufacturing process of a hydraulic seal kit?


Typically, a design engineer will select the components based on the demands of a particular application, such as size, temperature, and pressure. The suitable material is then subjected to high temperatures to get molted. Different molds are then used to put the molten material to take shape. These molds are just according to the specifications for which the product is needed.


After that, drying is carried out, followed by coating is done to avoid weather resistances. You can now use your seals to test if it is working accordingly. If yes, then you are ready to go.


16. What is the working principle of a hydraulic seal kit?


The working principle of a hydraulic seal kit is quite simple, and they are made of different elastomers. The O-ring is produced in the rubber mold and then assembled in the holder. When the oil flows into the cylinder, it begins to squeeze out due to the pressure, and the oil pushes against the outside of the seal and then makes the sealing surface tried and squeezed. Along with this process, a certain degree of pressure builds up between the two surfaces of the O-ring, thus overcoming any leakage.


17. What is the effect of temperature on the hydraulic seal kit?


The effect of changing temperature on the seal kit of hydraulic/pneumatic applications is not well understood. It depends on the type of seal kit and elastomer used. The temperature directly affects the seal’s ability to function at its total capacity. Seals are most effective when used within a temperature range of 40°F-80°F / 4.4°C-26.6° C.


Colder temperatures will cause blades to freeze, while higher temperatures will cause the seals to expand, reducing their effectiveness and, ultimately, the quality of your product. In most cases, however, a -20°F/-28.9 °C cold temperature would have little effect on an everyday seal kit if given enough time to warm back up.


18. How much does a hydraulic seal kit cost?


Hydraulic seal kit prices vary with the material that is used in crafting the seal. Elastomers such as silicone, urethane, neoprene, and latex can create seals in a hydraulic system. The number of seals, or types, being replaced and the diameter and length they require determine the cost of any seal kit.


The cost of a high-quality seal kit lies in the range of $50 to $200 per kit. The kit contains different sizes and specifications of seals used in multiple components in a hydraulic system.


19. What are the maintenance requirements of a hydraulic seal kit?


Seal kits are usually not that difficult to maintain. All the sealing elements must be replaced when they fail, which is generally caused by wearing. The seal kits must also be regularly serviced, especially the hydraulic hoses and tubes exposed to high temperatures due to friction.


For continuous, trouble-free operation, it is recommended to inspect seal kits regularly (at least annually) and replace any worn or damaged parts before they cause operational problems. Add the optimum amount of oil into your seals and check for contaminants and remove them appropriately.


20. What is the role of dust seal in hydraulic seal kit?


The dust seal has the role of preventing oil leakage from the pump. Dust seals are used in different types of hydraulic machinery, such as cylinders, motors, valves, port car wash equipment, and paint machine shop equipment. The diameter of the dust seal should take into account the diameter of the diameter of the shaft on which it will be installed.


The dust seal of the hydraulic seal kit keeps the kit from self-contacting and ensures that all tolerances can be appropriately maintained. The dust seal is mainly used to prevent the entry of foreign material into the equipment. Dust seals are commonly used in hydraulic equipment with a large installed volume and long hydraulic fluid circulating path.


21. Is noise associated with the hydraulic seal kit?


Yes, and noise levels of seals in hydraulic systems depend on the pressure in the design and the type of elastomer used. This occurs when the cylinder sees an extended amount of use and the hours of operation have exceeded the design life for that specific cylinder. Worn-out seals due to excessive temperatures may also result in a large amount of noise in your hydraulic system. Anti-shock mountings on the hydraulic pump and hydraulic motor, together with rubber mounting grommets, reduce this noise to acceptable levels.


22. What is the role of lip seal in a hydraulic seal kit?


A lip seal is the first of several seals that allow a hydraulic cylinder to pressurize and un-pressurize. There are several types of lip seals that are commonly used. Each lip seal type usually has a number that describes the dimensions and design of that lip seal in mm. Lip seals are used on single-acting cylinders and double-acting cylinders.


Essentially the term “single-acting” means that one direction flow when you pour fluid into a cylinder, and “double acting” means that fluid flows in both directions, towards the ends of the cylinder. Double-acting cylinders may need a second lip seal on either end of the sealing rod.


23. What are the problems associated with the hydraulic seal kit?


One of the most common problems involving hydraulic seal kits is dealing with a leaking seal. Most seals are made of O-rings and are designed to stretch or compress to fit around pipes. Some pneumatic seals, however, are made of silicone or other elastomers and can fail over time.


Hydraulic systems have different needs than pneumatic systems, and therefore hydraulic seal kits need to be custom designed for each application. In other cases, they must be selected after properly inspecting the right size and specifications that are compatible with your system.


24. What causes the failure of a hydraulic seal kit?


Three main factors usually trigger a hydraulic seal kit failure. The first is inadequate care in maintaining a clean oil supply to the hydraulic pump. Contamination is carried into the system when the oil gets dirty or too warm, leading to high operating temperatures. The second is the failure to match O-ring sizes to the requirements of each application.


O-rings are designed for specific temperature and pressure applications and need to be changed at regular intervals. Failures in this area could result in early seal breakdowns. The third factor is due to bad timing. Routine maintenance and seal replacement schedules need to be followed regularly to avoid failure.


Get Our Best Quotation

    Scroll to Top

    Get a Quick Quote!


      Get a Quick Quote!