A rotary lip seal typically consists of two main parts the elastomeric sealing lip and the metal or plastic casing. The sealing lip is made from materials such as rubber, polyurethane, or silicone, chosen for their resistance to wear, temperature fluctuations, and chemical exposure. The metal casing provides structural support and is designed to fit snugly onto a rotating shaft.

1. O-Rings These are torus-shaped seals that are widely used due to their simple design and versatility. They can be used in dynamic and static applications, and their effectiveness depends on the material and size.

2. Decreased Performance If machinery is struggling to maintain pressure or perform at its usual efficiency, the seals may be compromised. Reduced power and responsiveness are often linked to worn seals.

When selecting a hydraulic cylinder seal kit by size, it's essential to accurately measure the dimensions of your cylinder to ensure compatibility. Most seal kits come with detailed instructions on how to measure your cylinder properly and select the right kit size. It's crucial to choose a reputable manufacturer or supplier to guarantee the quality and durability of the seals.

Thoroughly clean all parts of the hydraulic cylinder, including the barrel, piston, and rod. Inspect each component for signs of wear or damage. If any parts are damaged beyond repair, they may need to be replaced.

In addition to preventing leaks, the oil seal also plays a role in protecting the hydraulic system from contaminants. Dust, dirt, and debris can easily enter the hydraulic system without a proper seal, leading to wear and tear on the components and potentially causing the system to malfunction. The oil seal creates a barrier between the internal components of the cylinder and the external environment, ensuring that the hydraulic system remains clean and efficient.

The designation 35x72x10 refers to the dimensions of the oil seal in millimeters. Here, 35 is the inner diameter (ID), 72 is the outer diameter (OD), and 10 is the width or thickness. The 20 in the specification may refer to a particular feature or code linked to manufacturing standards or specific application characteristics.

Conclusion

The performance of high pressure hydraulic shaft seals largely depends on the materials used in their construction. Common materials include nitrile rubber (NBR), fluorocarbon (FKM), polyurethane (PU), and PTFE (Teflon). Each material has unique properties that make it suitable for specific temperature ranges, chemical exposures, and pressure levels.

- Nanotechnology Incorporating nanomaterials into sealing compounds can enhance their properties, leading to improved performance under extreme conditions.

3. Disassembly Remove the hydraulic cylinder from its mounting. Carefully disassemble the cylinder by unscrewing the end caps and sliding out the piston rod.