Piston rod seals, also called piston rod sealing systems, are the most important components within hydraulic and pneumatic cylinders. They perform both the role of piston seals and the one of rod seals, thus providing an efficient sealing of both sides of the cylinder. These seals keep internal fluid from escaping beyond the piston and external fluid from leaking out of the rod, allowing for pressure retention and contaminant prevention.
Working Principle
Inside a conventional hydraulic or pneumatic cylinder:
The movement of the piston and the transfer of the force it generates rely entirely on the piston seals to create and maintain the pressure difference across the piston.
Rod seals help to prevent fluid from leaking from the cylinder where the rod extends and retracts.
Combined with piston rod seals, they maintain minimal friction and optimal performance through regulating internal and external seals.
Types of Piston Rod Seals
Single-Acting Piston Rod Seals
For these cylinders, pressure is only applied in one direction.
Double-Acting Piston Rod Seals
Ideal for double-acting cylinders and can seal both high and low pressure application directions.
Compact Sealing Sets
These are multi-element systems that integrate rod seals, piston seals, and wipers into one compact solution to maximize space and performance.
As one of the leading piston rod seals manufacturers and suppliers in China, we warmly welcome you to wholesale or buy customized piston rod seals made in China from our factory.
piston rod seals for emergency systems, piston rod seals for current regulation applications, piston rod seals for printing machines