Sealing rings are widely usage
Excavators are widely used in construction projects, mines and quarries, public utility and extrusion facility construction, agriculture and forestry, waste treatment and recycling, etc. Seals are one of the most important accessories of the excavator.
Products Description
Excavator O-ring is a sealing element, usually made of elastic rubber or plastic material, with a circular cross-section. It is widely used in hydraulic systems, pneumatic systems, and other sealing parts of excavators and other construction machinery to prevent leakage of liquid or gas.
Some detailed introduction to excavator O-rings：
- Material selection
Excavator O-rings are usually made of rubber materials, such as nitrile rubber (NBR), fluoro rubber (FKM), silicone rubber (VMQ), etc. Material selection depends on the application environment, operating temperature, pressure requirements, and required chemical resistance.
- Structure and cross-section
The cross-section of the excavator O-ring is annular, so it is also called a circular sealing ring. Its cross-sectional shape comes in various sizes and standards, such as AS568, ISO 3601, etc. Common cross-sectional shapes include round, square, rectangular, etc. The specific choice depends on the sealing requirements and installation space.
- Sealing principle
Through its elastic characteristics, the excavator O-ring is compressed into the sealing groove or between the sealing surfaces during installation to form a sealing effect. It uses the compression and deformation of its cross-section to fill the sealing gap and prevent liquid or gas leakage.
- Scope of application
Excavator O-rings are widely used in pistons, cylinders, valves, joints, and other parts of hydraulic systems to seal liquid oil seals. It can also be used for sealing applications in pneumatic systems, water treatment equipment, the automotive industry, machinery and equipment, etc.
Advantages and precautions
Excavator O-rings have the advantages of simple structure, easy installation, low cost, and high reliability. However, it is necessary to pay attention to the correct installation method and appropriate size selection in the application to ensure the sealing effect and service life.
o ring kits accessories
| products |
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| Description | O rings | Square rubber rings | Customized sealing | O ring repair kits |
| Color | Black or customized | |||
| Size | ISO Standard; USA standard or meet your required | |||
| Materials |
Based on your choice; Materials refers: to nitrile rubber (NBR), fluororubber (FKM), silicone rubber (VMQ), etc. |
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| Certification | ISO9001 | ISO14001 | IATF16949 | REACH |
| Molding ways | Compression Molding; Injection Molding; Extrusion | |||
In excavators, sealing rings are widely used in the following accessories and systems：
Hydraulic cylinder (hydraulic cylinder)
The hydraulic cylinder is an important component in the hydraulic system of the excavator and is used to achieve various actions, such as telescopic, lifting, and tilting of the arm, stick, and bucket. Seals, such as piston seals, rod seals, etc., are required between the piston and the cylinder inside the hydraulic cylinder to prevent oil leakage.
Excavator cylinder seals are key components used to seal and protect the interior of excavator hydraulic cylinders. Their main function is to prevent oil leakage and ensure the normal operation of the cylinder and the effective work of the hydraulic system.
Excavator cylinder seals usually consist of multiple sealing elements, including the following common types:
Piston Seals
Installed on the cylinder piston, it is in close contact with the cylinder wall to prevent hydraulic oil from leaking between the piston and the cylinder wall. Piston sealing rings are usually made of rubber, polyurethane, and other materials.
Rod Seals
It is installed on the cylinder rod and is in close contact with the rod and cylinder wall to prevent hydraulic oil from leaking from the outside of the cylinder rod into the environment. Rod seals are usually made of rubber, polyurethane, and other materials.
Sealing Guide Bands (Wear Rings)
Installed on the inner and outer diameter of the cylinder or the piston, it is used to support and guide the piston or cylinder to reduce friction and wear. Sealing guide strips are usually made of polyamide, polyester, and other materials.
O-rings Stanard Size Refers
| CS = Cross Section ID = Inside Diameter OD = Outside Diameter | |||
| Item | C.S. inch |
I.D. inch |
O.D. inch |
| 1 | 0.04 | 0.029 | 0.109 |
| 2 | 0.05 | 0.042 | 0.142 |
| 3 | 0.06 | 0.056 | 0.176 |
| 4 | 0.07 | 0.07 | 0.21 |
| 5 | 0.07 | 0.101 | 0.241 |
| 6 | 0.07 | 0.114 | 0.254 |
| 7 | 0.07 | 0.145 | 0.285 |
| 8 | 0.07 | 0.176 | 0.316 |
| 9 | 0.07 | 0.208 | 0.348 |
| 10 | 0.07 | 0.239 | 0.379 |
Valves
Various control valves and relief valves in the excavator hydraulic system also need sealing rings to ensure the sealing performance of the valves and prevent hydraulic oil leakage.
Hydraulic pipe joints
Sealing rings, such as O-rings, flat sealing rings, etc., are usually required for joints, connectors, and rotary joints in hydraulic pipelines to ensure the sealing of pipeline connections.
Hydraulic Pump
The excavator's hydraulic pump is responsible for providing the pressure and flow required by the hydraulic system. The seals of hydraulic pumps usually require sealing rings to prevent hydraulic oil leakage, such as pump shaft sealing rings.
Bearings
Various bearing components on the excavator, such as slewing bearings, sliding bearings, etc., may also need to use sealing rings to prevent lubricating oil or other liquids from leaking and maintain normal lubrication of the bearings.
How to ensure zero defects in O-rings during the production process
Through strict raw material selection, production process control, inspection and testing, zero-defect management, training and awareness raising, defective product handling, and continuous improvement, the defect rate of O-rings can be minimized and the goal of zero defects can be achieved.
Strict selection of raw materials
From the characteristics of wear resistance, oil resistance, high-temperature resistance, and chemical resistance, Linde Polymer engineers will recommend and evaluate suitable materials for you. Or help you test whether the material you specified complies. Conduct quality inspection and verification of raw materials to ensure the absence of any defects or contamination.
Production process control
We already have a complete production process and conduct strict process control. Ensure that each production step complies with specifications and has standard operating procedures and process parameters. Perform equipment calibration and maintenance to ensure the stability and reliability of the production process.
Inspection and testing
Multiple inspections and tests are performed during the production process to ensure product quality and performance. Including appearance inspection, dimensional measurement, hardness test, tensile strength test, temperature resistance test, etc. Use appropriate inspection equipment and tools to ensure products meet design requirements.
Zero defect management
Establish a zero-defect management system, including strict quality control and quality management. Implement a zero-defect goal and develop measures and processes to ensure any potential defects or issues are identified and corrected.
Training and awareness-raising
Our production operators have mature pre-job training to ensure they understand the importance of product quality and the goal of zero defects. Provides the skills and knowledge necessary to identify and correct potential quality issues.
Defective product handling and continuous improvement
We have established appropriate defective product handling procedures to ensure that any unqualified O-rings are promptly processed and traced. Take appropriate corrective actions to prevent similar problems from recurring.
keep improving
Regularly evaluate and review production processes to seek opportunities and measures for improvement. Through data analysis and feedback, potential problems and improvement points are identified to continuously improve production quality and achieve the goal of zero defects.
Pls, contact us for fast sealing solutions.
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