The U-shaped sealing ring is damaged. How to install a new one?

When the U-shaped sealing ring is damaged, reinstalling one is usually an effective way to solve the sealing problem. However, it is necessary to follow the correct installation steps and precautions to ensure that the new sealing ring can work properly. Here is a detailed introduction:

Installation steps

Preparations

Select the appropriate sealing ring: Based on the working medium of the equipment (such as hydraulic oil, water, gas, etc.), the working pressure, temperature range, as well as the size and shape of the sealing area, select a U-shaped sealing ring with the appropriate material and specification. For example, in a high-temperature environment, a fluorine rubber sealing ring with high temperature resistance should be chosen; for a high-pressure hydraulic system, a sealing ring with sufficient strength and pressure resistance should be selected.

Prepare tools and materials: Prepare the tools needed for installation, such as wrenches, screwdrivers, installation sleeves, etc., as well as cleaning supplies, such as clean cloths, cleaning agents, etc.

Clean the sealing area: Use cleaning agents to thoroughly clean the sealing area (such as piston rods, pistons, sealing grooves, etc.) to remove oil stains, impurities, and residues of the old sealing ring. Ensure that the sealing surface is smooth, without scratches or burrs, to avoid affecting the sealing effect.

Installation process

Apply lubricant: Apply an appropriate amount of lubricant to the lips of the U-shaped sealing ring and the sealing surface to reduce friction and wear during the installation process, and help the sealing ring fit the sealing surface better. The lubricant should be selected to be compatible with the working medium, for example, for hydraulic systems, a lubricating grease compatible with hydraulic oil can be used.

Install the sealing ring: Carefully place the U-shaped sealing ring on the piston rod or piston, or install it into the sealing groove. During the installation process, be careful not to twist, flip or damage the sealing ring. Tools such as installation sleeves can be used to assist in the installation to ensure that the sealing ring is evenly inserted into the sealing groove.

Check the installation: After installation, carefully check whether the installation position of the sealing ring is correct, whether the lips are fully adhered to the sealing surface, and whether there are any distortions, deformations or extrusions. If necessary, gently adjust the position of the sealing ring to ensure its correct installation.

Post-installation inspection and debugging

Check for leakage: Before starting the equipment, conduct a leakage check. By filling the system with media (such as hydraulic oil, compressed air, etc.), observe whether there is any leakage at the sealing area. If there is leakage, immediately stop the equipment operation, check the installation of the sealing ring, and if necessary, reinstall or replace the sealing ring.

Debug the equipment: After confirming that there is no leakage in the seal, start the equipment for debugging. During the debugging process, closely observe the operation of the equipment and check the working state of the sealing ring. If there are any abnormal situations, such as abnormal sounds from the sealing ring or unstable equipment pressure, stop the machine for inspection and handling. Notes for Attention

Follow the installation guidelines: Operate strictly in accordance with the installation manual and relevant standards to ensure that the installation process meets the requirements. The sealing structures and installation methods of different devices may vary, so carefully read the manual to avoid damage to the sealing ring or equipment failure due to improper installation.

Avoid excessive stretching or compression: During the installation process, be careful not to excessively stretch or compress the U-shaped sealing ring, as this may affect its sealing performance and service life. Excessive stretching may cause the lip of the sealing ring to become thinner, reducing the sealing effect; excessive compression may cause the sealing ring to lose elasticity and fail to function properly.

Pay attention to the installation direction: U-shaped sealing rings usually have installation direction requirements. Ensure that the lip of the sealing ring faces the direction of the medium pressure. If the installation direction is incorrect, the sealing ring will not be able to provide effective sealing and may even cause the seal to fail.

Regular inspection and maintenance: Even if a new U-shaped sealing ring has been installed, regular inspections and maintenance of the equipment should be carried out. Check the wear of the sealing ring, the cleanliness of the sealing area, and the operating status of the equipment, and promptly identify and address potential problems to ensure that the sealing performance of the equipment remains in good condition.

FOREVER SEALS! Seals manufacturer, accept custom seals, from design to research and development, from production to testing, a full range of services. For more information, please contact FOREVER SEALS directly. FOREVER SEALS product experts are here to help you! Whatsapp: +86-18098184099；WeChat: +86-13049188460；  E-mail: sales@foreverseals.com.