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Description of UN Radial Shaft Hydraulic XNBR Seal
Special features
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Material properties: XNBR rubber is a synthetic rubber material with better oil resistance and wear resistance than other rubber materials.
- Sealing performance: UN radial shaft hydraulic seals are designed as radial seals, which can effectively prevent hydraulic oil or liquid media from leaking from the bearing seat or bearing to ensure minimum leakage rate and maximum service life.
- Wide range of applications: Radial shaft hydraulic XNBR seals can be applied to various industrial fields and application scenarios. They are commonly used in mechanical equipment in hydraulic systems, engineering machinery, the automotive industry, aerospace, and other fields.
- Axial load and pressure bearing capacity: UN radial shaft hydraulic XNBR seals can work stably under high pressure and high load environments to ensure a reliable sealing effect.
Common application scenes
Hydraulic system: UN radial shaft hydraulic XNBR seals are commonly used in components such as hydraulic cylinders, hydraulic pumps, and hydraulic valves in hydraulic systems.
Engineering machinery: In the field of engineering machinery, such as excavators, loaders, bulldozers, and other equipment, UN radial shaft hydraulic seals are often needed to protect the normal operation of the hydraulic system.
Automotive Industry: In the automotive manufacturing industry, radial shaft hydraulic XNBR seals are widely used in key components such as engines, transmissions, and steering systems.
Aerospace: In the aerospace sector, UN radial shaft XNBR seals are used in aircraft hydraulic systems and engines. Since the aerospace industry has very high requirements for sealing performance and reliability, these seals can withstand high temperatures, high pressures, and complex working conditions.
Industrial Equipment: UN radial shaft hydraulic seals are also used in various industrial equipment such as pumps, compressors, machine tools, and wind turbines.
Physical property information
| Specifications | Values | Test Methods |
| Shore Hardness (Shore A) | 85 ° Shore | DIN 53505 |
| Specific Gravity | 1.30 g/cm³ | BS903 Part A1 |
| Abrasion Resistance | 149 % | DIN 53516 |
| Compression Set | 50 % | BS903 |
| Elongation at Break | 520 % | DIN 53504 |
| Highest Recommended Working Temperature | 150 °C | None |
| Lowest Recommended Working Temperature | -30 °C | None |
| Modulus @ 100% | 3.5 N/mm² | DIN 53504 |
| Modulus @ 300% | 7 N/mm² | DIN 53504 |
| Tear Strength | 37 N/mm | DIN 53504 |
| Tensile Strength | 18.3 N/mm² | DIN 53504 |
Sealing principle
The sealing principle of UN radial shaft hydraulic XNBR seals is based on the following key aspects:
1. Compression deformation: Seals are usually made of elastic materials, such as XNBR rubber. When the seal is installed on the shaft or hole wall, it will undergo a certain compression deformation due to its elasticity. This deformation creates close contact between the seal and the shaft or hole wall, thereby achieving a sealing effect.
2. Leakage path blocking: The design of UN seals considers the possible paths of liquid medium leakage, and blocks the leakage path through reasonable structural design and material selection.
3. Lubrication and sealing: In hydraulic systems, hydraulic oil is often used as a lubricating medium. UN seals usually have certain lubricating properties to reduce friction with the shaft or hole wall and provide a better sealing effect.
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