Products Description
| Material | HNBR |
| Keywords | Non-Symmetrical Hydraulic U-Cup Rod HNBR Seals |
| Ultimate tensile strength | 8.00 - 24.0 MPa |
| Hardness | 79 Shore A |
| 100% modulus | 0.0128 GPa |
| Rebound | 32% |
What are Non-Symmetrical Hydraulic U-Cup Rod HNBR Seals
Non-symmetrical hydraulic U-cup rod HNBR seals are specifically designed seals used on rod sections in hydraulic systems. It is made of HNBR material. Unlike traditional symmetrical U-shaped sealing rings, asymmetric U-Cup sealing rings have an asymmetrical design in cross-sectional shape. It is designed to provide better sealing performance and resistance to compression deformation to accommodate high-pressure and high-temperature hydraulic applications. Due to the asymmetric shape, this seal can provide a better sealing effect during compression and release, reducing leakage and leakage.
Structural characteristics
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U-cup design: This seal features a U-shaped design with a rounded inner lip and an outer lip. The inner lip is used to seal the liquid and prevent it from entering the seal's external environment, while the outer lip is used to prevent external contaminants from entering the interior of the seal.
- Asymmetrical construction: The inner and outer lips of this seal are asymmetrical in shape and size. Typically, the inner lip is larger than the outer lip, which provides a better seal. The asymmetric structure can provide better sealing performance during the movement of the hydraulic rod.
- Hydraulic rod seal: This U-cup seal is mainly used for sealing hydraulic rods. The hydraulic rod is a key component in the hydraulic system, used to transmit hydraulic force and control mechanical movement. Asymmetric hydraulic U-cup rod HNBR seals can effectively seal hydraulic rods and prevent fluid leakage.
- HNBR material: HNBR (hydrogenated nitrile rubber) is an excellent sealing material with good oil resistance, wear resistance, and high-temperature resistance. This material is suitable for high-pressure and high-temperature environments in hydraulic systems and has a long service life.
functions
Sealing fluid: The working fluid in a hydraulic system (usually hydraulic oil) enters the hydraulic cylinder through the piston rod. U-Cup seals create a seal around the piston rod, preventing fluid from leaking out of the system. This helps maintain system stability and proper functioning.
Prevent contamination: The working environment in hydraulic systems may contain contaminants such as dust, particles, water, etc. U-cup seals can effectively prevent these contaminants from entering the hydraulic system and protect the components inside the system from damage. This is very important for the reliability and longevity of the hydraulic system.
Friction Reduction: U-Cup seals form a seal between the piston rod and hydraulic cylinder block and provide friction reduction. This helps reduce wear and friction heat on the piston rod and increases the efficiency of the system.
Withstand high pressure: The fluids in hydraulic systems often have fairly high pressures. Non-symmetrical hydraulic U-cup rod HNBR seals are made of high-pressure materials and can withstand high-pressure environments to ensure the safety and reliability of the system.
Application scenarios
1. Hydraulic cylinder: The hydraulic cylinder is the core component of the hydraulic system and is used to convert hydraulic energy into mechanical energy. Asymmetrical hydraulic U-cup rod HNBR seals can be used on the rod ends of hydraulic cylinders to ensure no leakage during rod movement.
2. Hydraulic machinery: Hydraulic machinery is widely used in various industrial fields, such as excavators, cranes, injection molding machines, etc. Hydraulic cylinders and hydraulic motors in these machines often use asymmetric hydraulic U-cup rod HNBR seals to ensure system reliability and minimize leakage.
3. Automotive industry: Asymmetric hydraulic U-cup rod seals are widely used in automotive hydraulic braking systems, suspension systems, and transmission systems. These seals perform a critical sealing function in the normal operation of the vehicle.
4. Construction machinery: Construction machinery such as bulldozers, loaders, road rollers, etc. often use hydraulic systems to provide power and control. Asymmetric hydraulic U-cup rod seals are used in the hydraulic cylinders and hydraulic motors of these machines to ensure system reliability and performance.
selection of a U-cup seal
When choosing the right U-cup seal for a particular application, there are certain factors to consider including general guidelines and design elements. The following are some of the considerations that can influence your selection. Based on the specific needs of your application, we recommend connecting with a representative to assist with product selection.
Criteria to consider for U-cup seal selection include:
- Fluid Media. One key factor to consider is the specific type of fluid used in hydraulic applications requiring U-cup seals. This will dictate which seal is compatible with the fluid or chemical used.
- Service Materials. A seal and fluid's maximum and minimum service temperature will also determine the most compatible seal type and material to use for an application.
- System Pressure. The type of sealing compound used will determine how well seal materials can withstand pressure.
- Leakage and Lip Squeeze. Different applications will need either lip or squeeze seals of low to high friction, wear, and sealability.
- Retrofit and Gland Size. U-cup seals are often designed to fit current gland designs, which is why it's important to consider how well a U-cup seal will fit a new or existing gland.
- Installation. While some U-cup seals are easy to install, others can be more challenging to fit. The installation of a U-cup seal will depend on its size, profile, material, and the specific application for which it will be used.
- Seal Life Expectancy. The life expectancy of a seal will depend on the seal's material and type. Factors influencing the seal's life expectancy include stroke, pressure, fluid type, surface finish, duty cycle, and speed.
- Price and Availability. The ideal U-cup seal will be cost-effective and facilitate consistent efficiency.
conclusions
To help meet customers' specific requirements, Linde Polymer produces a range of U-seals made from a variety of HNBR, PTFE, and rubber materials. We can fulfill orders from a few U-cups to high-volume orders of hundreds to thousands. To learn more about the U-cup sealing products and services we offer, please feel free to contact us. You can also request a quote, contact our professionals, and discuss your individual needs.
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