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Recognizing the signs that your hydraulic cylinder may need a rebuild is pivotal. Common symptoms include

- Backup Rings These are used in conjunction with O-rings to provide additional support and help prevent extrusion, especially in high-pressure applications.

- V-Seals These seals are designed to protect against contaminants while retaining lubrication within the system. They are typically used in conjunction with other seals for enhanced protection.

The design must be such that it balances the need for a tight seal with the amount of friction generated during operation. Excessive friction can lead to wear and heat buildup, while insufficient sealing can allow fluid leakage. Therefore, engineers carefully select materials and dimensions to ensure optimal performance.