A hydraulic seal is a critical component used in hydraulic cylinders and industrial machinery to prevent fluid leakage, maintain pressure stability, and protect the system against dust and contaminants. Designed for both piston and rod sealing applications, hydraulic seals ensure smooth and reliable performance in all types of reciprocating motion systems. They are available in various structures to meet different pressure, speed, and environmental requirements.
Functions & Features
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💧Reliable Sealing Performance
Ensures stable pressure in hydraulic systems and prevents internal leakage.
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💧Suitable for Reciprocating Motion
Designed for piston and rod movement in hydraulic cylinders.
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💧Dust and Contaminant Protection
Optional dust-proof designs block particles and impurities.
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💧Multiple Structures Available
Includes piston seals, rod seals, combination seals, and dust seals for diverse applications.
Applications
Hydraulic seals are widely used in:
Use in ERW Tube Mill
In an ERW Tube Mill, hydraulic seals are essential to the stability and reliability of multiple hydraulic-driven mechanisms. They are commonly used in:
1. Uncoiler Hydraulic Cylinders
2. Hydraulic Shear
Maintains stable cutting force for coil strip preparation.
3. Hold-down & Squeeze Cylinders
Provides accurate pressing and positioning during strip feeding.
4. Lifting and Auxiliary Systems
Used in lifting tables, coil loading platforms, and adjustment systems.
5. Expansion & Clamping Units
Ensures smooth operation of expansion, gripping, and release mechanisms.
Hydraulic seals are key consumable parts that maintain pressure accuracy and prevent downtime.
Technical Parameters (Customizable)
| Parameter |
Description |
| Type |
Rod Seal / Piston Seal / Dust Seal / Combined Seal |
| Working Pressure |
Suitable for medium to high-pressure hydraulic systems |
| Temperature Range |
Compatible with a wide range of industrial environments |
| Application |
Reciprocating sealing and dust protection |
| Customization |
Dimensions and structures can be customized |
Common Seal Types
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✔️U-Seal
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✔️Y-Ring / Y-Seal
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✔️Piston Seal
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✔️Rod Seal
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✔️Combined Seal
✔️Dust Seal / Wiper
Short Q&A for Hydraulic Seals
Q1: What is a hydraulic seal❓
A: A sealing ring used in hydraulic cylinders to prevent oil leakage and keep pressure stable.
Q2: Where is it used in an ERW Tube Mill❓
A: Mainly in uncoilers, hydraulic shears, lifting systems, squeeze cylinders, and expansion units.
Q3: Can it be used for both piston and rod positions❓
A: Yes. We provide seals for piston, rod, dust protection, and combined sealing.
Q4: Do you offer customized sizes❓
A: Yes. Send us your dimensions or a sample, and we will match the correct seal.
Q5: How do I choose the right seal❓
A: Provide the cylinder size and working condition, and we will recommend the correct type.
Q6: Do you offer different materials❓
A: Yes. Seals can be made in various materials depending on temperature, pressure, and environment.
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- 1. Coil car and Storage
- 2.Single And Double Heads Un-coiler & Hydraulic And Pneumatic Un-coiler
- 3.Peeler and hold down roll arm
- 4.Flattening Machine
- 5.Automatic and Semi Auto Shearer & Butt Welder
- 6.Vertical Cage Accumulator & Horizontal Loop Accumulator & Landing Horizontal Spiral Loop Accumulator


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- 1. Eddy current machine
- 2. Seam annealing machine
- 3. Straightener machine
- 4. Chamfer and end facer machine
- 5. Hydro Tester machine
- 6. Threading machine
- 7. Painting and oil machine
- 8. Automatic bundle and package machine


Spare Parts and Consumble Parts
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- 1. Rollers, Moulds, Dies, D2,D3 material to choose
- 2. Ferrite, Impeder, Fiberglass tube
- 3. HSS saw blades, TCT Saw blades, Friction saw blades
- 4. OD burr remove inserts, ID burr remover inserts
- 5. HF welder Induction Coil and other HF welder spare parts
- 6. Copper tube for induction Coil, PTFE pipe for Induction Coil
- 7. Mosfet, Boards
- 8. Steel pipe Strapping machine
- 9. Zinc Spray Machine, Zinc wire, Zinc spray gun


- Why Choose Us?
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1.Leading Technology, Reliable Quality, Excellent Service! Optimized Design, High quality material select! Heat treatment process guarantee!
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2.Spiral bevel gear, drum gear coupling and carburization. Gear teeth quenching. Driven system stable, efficient and wearable with lower noise.
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3.High precision wear resisting and Long life of toolings. All the machine Lathes, Key Grooves are positioned and Milled by CNC.
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4.Quality department make sure the material of the raw materials quality, and ensure the machine running perfect.

After-sales service
- 1.Machine test running videos will supply to customer before shipment.
- 2.Online techenical support WHOLE LIFT FREE.
- 3.Professional engineers team to install the machine, train your employee well.
- 4.One year warranty and life-long technical support.
- 5 .24 hours for engineer response.
- 6.Your business relationship with us will be confidential to any third party.
- 7. We welcome customers to visit our factory anytime.
