News

News And Information

29

2019

-

11

What are the characteristics of piston rod seals?

As we all know, the piston rod seal is one of the main pressure-bearing components in the hydraulic cylinder. It bears pressure in one direction, bears large pressure, and is in direct contact with hydraulic oil. The piston rod seal refers to the seal between the piston rod and the cylinder head. If the seal is not good, oil will leak, and the sealing groove will be opened on the hole. The piston rod seal is installed inside the dust-proof seal of the hydraulic cylinder end cover to prevent the leakage of hydraulic oil. It is required that the pressure holding performance is good in the static state, the pressure in the movement should be high, the sealing performance is good, the friction coefficient is small, and the anti-extrusion ability is strong.


Author:

As we all know,Piston rod sealIt is one of the main pressure-bearing components in the hydraulic cylinder. It is one-way pressure-bearing, bears large pressure, and is in direct contact with hydraulic oil. The piston rod seal refers to the seal between the piston rod and the cylinder head. If the seal is not good, oil will leak, and the sealing groove will be opened on the hole. The piston rod seal is installed inside the dust-proof seal of the hydraulic cylinder end cover to prevent the leakage of hydraulic oil. It is required that the pressure holding performance is good in the static state, the pressure in the movement should be high, the sealing performance is good, the friction coefficient is small, and the anti-extrusion ability is strong.
 
活塞杆密封
 
Piston rod sealThe parts are mainly made of polytetrafluoroethylene materials or polyurethane materials. These materials are designed for fluid mechanics applications, providing excellent wear resistance and excellent anti-extrusion characteristics. The piston rod seal is mainly used for the liquid seal inside the cylinder to prevent the liquid from leaking to the outside of the cylinder.
 
The surface of the piston rod seal is usually chrome-plated, which can ensure that the piston rod seal does not rust during use. The piston rod seal is a combined seal, which is prestressed by the O-ring and compensates for the initial state and work. The friction force is small, and the friction resistance is reduced and the wear resistance is improved due to the additives such as graphite, copper powder, carbon fiber, glass fiber, etc.

Key words:

Piston rod seal,Piston rod seal