Rod Seals are a key component specially used for sealing piston rods, and they play an indispensable role in many hydraulic and pneumatic equipment.

1. Structure and Design

Rod Seals usually have a compact and precise structure. It consists of a sealing lip, a main body, and an anti-extrusion component. The sealing lip is the part that directly contacts the piston rod, and its design shape can fit the surface of the piston rod tightly to ensure that fluid leakage is effectively prevented when the piston rod reciprocates. The main body provides support and fixation for the sealing lip, while the anti-extrusion component is used to prevent the seal from being squeezed out of the sealing groove under high pressure, which enhances the stability and durability of the seal.

Rod Seals

2. Material Properties

Rubber Material

Nitrile rubber is one of the commonly used materials. NBR has good oil resistance and wear resistance and is suitable for most hydraulic oil environments. In hydraulic systems, the piston rod is often immersed in oil and reciprocates. NBR Rod Seals can resist oil erosion for a long time and maintain good sealing performance.

Fluororubber Rod Seals are suitable for more harsh environments, such as high temperature and strong corrosive chemicals. FKM can withstand high temperatures and can effectively seal when in contact with corrosive substances such as acids and alkalis.

Polytetrafluoroethylene

Rod Seals made of PTFE have an extremely low friction coefficient, which makes the friction force on the piston rod extremely small during movement, reducing the energy loss of the equipment. At the same time, PTFE has good chemical stability and corrosion resistance, and can adapt to a variety of different working media.

3. Application Scope

Rod Seals are widely used in various industrial fields. In the hydraulic cylinder of engineering machinery, it ensures the sealing of the cylinder, prevents hydraulic oil leakage, and ensures the normal lifting, excavation and other actions of the equipment. In the pneumatic device of automation equipment, Rod Seals also ensure the efficient operation of the cylinder and improve the working accuracy and reliability of the equipment.

Keyword:

Rod Seals

As the leading designer and manufacturer of rubber parts and seals, DESIOR Rubber has a wide range of products to meet all your sealing needs. From our vast o-ring inventory of virtually any shape and size to our complex, custom sealing solutions, we have precisely what you need for any sealing application.

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