How Do Rod Hydraulic Rod & Piston Seals Work?
Rod and buffer seals maintain sealing contact in a sliding motion between the cylinder head and the piston rod. A rod sealing system can consist of a rod seal and a buffer seal or a rod seal only. Rod sealing systems for heavy-duty applications typically consist of a combination of both seal types. The buffer seal is arranged between the rod seal and the piston in the cylinder head. Rod seals determine the tolerance for the rod diameter.
Rod seals provide a thin lubrication film on the piston rod that lubricates themselves and the wiper seals. The lubrication film must be thin enough so that it returns to the cylinder during the return stroke.
Piston seals maintain sealing contact between the piston and the cylinder bore. Piston seals are typically classified into single-acting (pressure acting on one side only) and double-acting (pressure acting on both sides) seals.
Types of Hydraulic Rods & Piston Seals
Rod Buffer Seals
These are essential for hydraulic and pneumatic cylinders, cushioning the piston rod to prevent damage and enhance system longevity. Made from materials like polyurethane, rubber, and PTFE, they're designed for durability and compatibility with various hydraulic fluids.
Rod buffer seals protect against metal-to-metal contact, reducing wear and leakage while handling high pressures, speeds, and temperature variations. By guarding against external contaminants, rod buffer seals significantly boost cylinder reliability and performance.
T-Seals
Featuring a distinctive T-shaped profile, T-seals consist of an elastomeric seal flanked by two anti-extrusion rings, enhancing their ability to withstand high pressures without being squeezed out.
T-seals outperform traditional O-rings by providing superior stability, reduced failure risk, and compatibility with a wide range of pressures and temperatures. Their design simplifies installation and improves seal retention, making them ideal for dynamic applications where reliability and efficiency are key.
Piston Rings Supplier
Rocket Seals is a leading seal and O-Ring specialist, supplying sealing products for all industrial applications. For over 60 years, we have served the growing and changing needs of multiple industries, partnering with leading manufacturers to update and expand our inventory to provide products that meet your latest needs.
Contact us today to see how we can solve your sealing challenges.