2023-11-28
What Are The Common Types Of Sealing Rings For Hydraulic Cylinders?
Function: The piston sealing ring is installed on the piston and forms a seal with the cylinder bore. Its primary function is to prevent hydraulic fluid from bypassing the piston and leaking to the opposite side of the cylinder.
Material: Piston sealing rings are typically made of materials such as polyurethane or nitrile rubber, which offer excellent sealing properties and resistance to hydraulic fluids.
Types: There are various types of piston sealing rings available, including single-acting piston seals and double-acting piston seals. Single-acting seals are designed for cylinders with pressure acting on one side of the piston, while double-acting seals work for cylinders with pressure acting on both sides of the piston.
Design: Piston sealing rings usually have a U-shaped or lip-shaped design. The U-shaped design provides effective sealing in both directions, while the lip-shaped design allows for easy installation and improved sealing performance.
Support Ring: In some cases, a support ring, also known as a back-up ring, may be used in conjunction with the piston sealing ring. The support ring prevents extrusion and deformation of the sealing ring under high pressure, enhancing its durability and sealing effectiveness.