Linde Polymer Tec Co.,Ltd. is one of the most experienced manufacturers and suppliers of va type dust-proof water seal for rotating shaft in China, also supports customized service. Please feel free to buy high quality va type dust-proof water seal for rotating shaft for sale here from our factory.
Products Description
VA type dust-proof water seal for rotating shaft is an all-rubber seal for rotating shafts that is primarily used to prevent the intrusion of media such as dust, dirt, water, and oil while keeping internal lubricants (such as hydraulic oil, emulsion, or water) from leaking out.
Advantages
VA-type seal is an axial lip seal made of pure rubber, mainly used for axial end sealing roll shaft heads in metallurgical machinery.
Reliable sealing: VA seals have an axially acting sealing lip that prevents external contaminants such as dust, dirt, and water from entering the system while retaining internal lubricants.
Tolerance compensation: The lip has good flexibility and adaptability to compensate for shaft eccentricity.
Low friction design: The design minimizes friction between the seal and the rotating shaft, reducing energy consumption in the mechanical system.
All-rubber design: The VA seal is an axial seal made of a single piece of rubber without metal reinforcement.
Performance Parameters
Size range: diameter 4-180mm.
Pressure range: 0-60MPa.
Temperature range: -20℃~+180℃.
Speed: up to 15m/s.
Material
Nitrile (NBR):
- Oil resistance: NBR is highly resistant to oils and fuels, making it suitable for applications where oil leaks are a concern.
- Temperature range: It can operate effectively in a temperature range of approximately -25°C to 110°C, making it suitable for many industrial applications.
- Elasticity: NBR has good elasticity, allowing the seal to maintain contact with the shaft even under varying conditions.
Fluorocarbon (FKM):
- High-temperature resistance: FKM can withstand higher temperatures than NBR, making it suitable for more demanding environments.
- Chemical resistance: This material has excellent resistance to a wide range of chemicals, enhancing the seal's durability in harsh conditions.
| FKM 75 | Property | Unit | Test Method | Test Parameter | Value |
| Hardness | Shore A | ASTM D 2240 | 75 | ||
| Tensile Strength | MPa | ASTM D 412 | 11.0 | ||
| Ultimate Elongation | % | ASTM D 412 | 181 | ||
| Specific Gravity | g/cm3 | ASTM D 297 | 2.15 | ||
| Compression Set | % | ASTM D 395 B | 22h / 200°C | 14 | |
| Low temp. resistance | °C | ASTM D 1329 | TR10 | -15 |
| NBR 80 | Test Method | Norm | Test Values |
| Hardness | ISO 48 Method M | 80 ± 5 IRHD | |
| Tensile Strength at break | ISO 37 | 14.9 MPa | |
| Elongation at break | ISO 37 | 492% | |
| Specific Weight | ISO 2781 | 1.25 | |
|
Compression Set 25% compression - 22h/100°C on slab on O-Ring (3.53 mm) |
ISO 815
ISO 815 |
max 13% max 21% |
|
|
Heat Ageing 70h/100°C Hardness Change |
ISO 188
|
max +7° |
application
1. Metallurgical Machinery
VA seals are commonly used for axial end face sealing of roller shaft heads in metallurgical machinery.
2. General Machinery Rotating Parts
Applicable to rotating parts of various general machinery, such as motors, pumps, gearboxes, etc., to prevent dust, water, and chemicals from entering the bearing seat or other key components.
3. Agricultural and Mining Equipment
VA seals can be used for rotating shaft parts in agricultural and mining equipment, such as tractors, harvesters, mining conveying equipment, etc.
4. Water Treatment and Sanitary Equipment
Can be used for water pumps, valves, and filtration systems to ensure that the equipment does not leak during operation and prevent external pollutants from entering the system.
about Us
Linde Polymer Tec Co., Ltd. mainly produces a variety of rubber compounds and rubber seals and currently has more than 3,000 material formulas and more than 2,000 product specifications. Products are suitable for automotive, aviation, machinery, petrochemical, medical, food, electronics, military, industrial, and other fields. Since the establishment of the factory, the company has completed the process consistency operation, and the product yield rate has reached 97.1%.
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