UN–Hydraulic Piston And Rod U Cup Seals

Sealing principle

U-shaped seal structure: UN U-shaped seal adopts a special U-shaped cross-section design. This structure makes the seal have better elasticity and deformability. It consists of two lips and a base. The lips are the edges on both sides of the seal that come into contact with the piston or rod surface and form a seal.

The elastic effect of the lip: When the hydraulic system is in working condition, the hydraulic pressure acts on the lip, causing it to elastically deform. This deformation brings the lip into tight contact with the piston or rod surface and prevents fluid from leaking from the sealed location.

Pressure balancing effect: The pressure in the hydraulic system acts on both the inner and outer sides of the seal. When the pressure on the inside is greater than the pressure on the outside (such as on the piston side), the lip will adhere more closely to the piston surface, thereby enhancing the sealing effect. Conversely, when the pressure on the outside is greater than the pressure on the inside (such as on the rod side), the lip relaxes slightly to allow lubricant to flow back and reduce friction.

The role of lubricants: Lubricants (such as hydraulic oil) are often used in hydraulic systems to reduce the friction between seals and piston or rod surfaces and increase the life of seals. Lubricants can form a thin film between the lip and the piston or rod, reducing friction and preventing wear.

Applicable working conditions

1. High-pressure application: UN-U-type seals can withstand the action of high-pressure liquids and ensure the sealing of the piston and rod parts. They are commonly used in high-pressure hydraulic systems, such as hydraulic cylinders, hydraulic machinery, etc.

2. Temperature changes: UN-U type seals have good temperature resistance and can adapt to a wide temperature range. Whether in extreme cold or high temperatures, they maintain their sealing effect and will not fail due to temperature changes.

3. Dynamic movement: UN–hydraulic piston and rod u cup seals are suitable for dynamic movement of pistons, and rods, which can effectively prevent liquid leakage and reduce friction. Whether it is high-speed motion or frequent reciprocating motion, they can provide a reliable sealing effect.

4. Different media: UN-U seals can be used for sealing various liquid media, including hydraulic oil, lubricating oil, and other special liquids. They have good oil and chemical resistance.

5. Environmental requirements: UN-U seals can adapt to different environmental requirements, including dust, moisture, chemical substances, etc. They are often dustproof, waterproof, and corrosion-resistant.

UN–Hydraulic Piston and Rod U Cup Seals

The U Cup Seal is the ultimate sealing solution for industrial and hydraulic applications. Its unique U-shaped design allows it to provide superior sealing performance, while also offering excellent durability and longevity.

Made from high-quality materials, the U Cup Seal is resistant to wear, temperature changes, and various types of fluids and chemicals, making it a reliable and efficient choice for a wide range of applications.

Whether you need to seal hydraulic cylinders, pumps, or valves, the U Cup Seal is the perfect choice for ensuring leak-free operation and maximum performance. So why wait? Choose the U Cup Seal today and experience the best in sealing technology!

*Special reminder, if you need this seal product, please provide us with the corresponding drawings so that we can provide you with better help.