Hydraulic seals are an essential part of hydraulic cylinders. They are made of non-metallic materials such as rubber, polyurethane, or PTFE. The main purpose of these seals is to provide resistance that prevents hydraulic fluid under pressure from escaping. In addition, they guarantee that the fluid remains confined, enabling efficient power transmission and performance.
Hydraulic seals installation requires thorough knowledge and expertise. Whether you are an expert or installing hydraulic seals for the first time, this guide can help you. This guide provides practical tips for installing hydraulic seals effectively.
Inspect Installation Parts
A thorough inspection is key to installing hydraulic seals effectively. Before you start installation, inspect the parts that require sealing. Check for signs of damage, such as scratches, cuts, or fluid leakage on the surface. Inspect cylinder bores and rods for scratches or sharp edges that can cut new seals.
Prep and Clean Installation Tools and Seals
Cleaning the installation tools and seals is the best way to enhance the longevity of hydraulic seals. Start by cleaning all tools and seals with a lint-free cloth, removing excess dust and other solid particles, such as dirt, chips, and foreign debris. Thorough cleaning can improve performance and prevent future leaks.
Lubricate Everything
Lubrication will reduce seal friction and extend seal life. Before installing the seals, lubricate the seals and sealing paths to reduce friction and enhance durability. Use a lubricant compatible with your seal material. Suitable lubricants include silicone grease, petroleum-based oil, barium grease, or fluorocarbon fluid for smooth lubrication.
Protect from Sharp Edges
Sharp edges can significantly damage or cut the seals. Protect the seals from sharp corners, edges, and burrs to prevent surface damage. You can also use plastic or brass tools to install seals instead of screwdrivers, which can cut them. Further, round off all sharp edges and corners for smooth seal installation.
Orient Perfectly
Placing the seals is one of the critical parts of installation. Make sure the seal is perfectly seated, flat, and not twisted in the groove. However, neglecting its position might lead to seal failure and, eventually, leaks in the hydraulic cylinders.
Use Heat for Tough Seals
Heating a hydraulic seal can improve its elasticity. But make sure you don’t heat the seal beyond its temperature limits. You can also soak the hydraulic seals in hot lubricant to soften them during installation, especially for tough seals.
Do Not Overstretch
Don’t overstretch the hydraulic seals. Overstretching the seals might loosen them from the actual cylinder fitting and can break them as well. You can also stretch the seals by heating them, but don’t overstretch because this might affect their size.
Avoid Using Inefficient Tools
The final tip for installing a hydraulic seal is to avoid inefficient tools. However, using the sharp-edged tools with dust particles and removing an old seal can destroy your hydraulic seal installations.
Bottom Line
Follow the practice tips mentioned above for hydraulic seal installations. But it is always recommended to seek professional assistance when installing hydraulic seals in your hydraulic systems.