For the hydraulic and pneumatic equipment, the cylinder design is getting more and more
high-tech and complex. As a result, for the cylinder application, a variety of different seals
are required, and the seals need to offer long service life and reliability. Sealing elements
are critical components for the hydraulic and pneumatic cylinder. Their main function
is to prevent the cylinder fluid or gas from escaping, so that to ensure the normal
functioning of the cylinder whether in a pressurized or un-pressurized state.
Sealing Products for Hydraulic and
Pneumatic Cylinder Applications
Product Description
WSI HYDRAULIC & PNEUMATIC RANGE
OF SEALS includes Piston Seals, Rod Seals,Wiper Seals, Wear Rings, etc.
Rubber, Polyurethane, PTFE, Nylon and other materials are used to create
a variety of seals to work under different hydraulic and pneumatic
conditions. Most of these seals are designed for the reciprocating
motion used commonly in hydraulic and pneumatic applications such
as cylinders. To meet the critical requirements of the hydraulic and
pneumatic equipment industries, WSI offers a wide range of designs.Technical Information
Sealing Design for the Hydraulic &
Pneumatic Applications
Technical Information
For Hydraulic and Pneumatic Seals, WSI provides various types and designs for
customer selection.
Wiper Seal : To prevent external contaminants from entering the system
Wear Ring : To prevent metal-to-metal contact
Piston Seal : Installed and fixed on the piston groove to seal against the cylinde
Rod Seal : Installed and fixed on the cylinder bore to seal against the rod
WSI Rod & Piston Seal Application
Selection
of Hydraulic
and Pneumatic Seals
Sealing elements are vital in the hydraulic and pneumatic equipment. Their use is
critical and they provide a way for the fluid power to be changed into liner motion.
However, seal failure can be detrimental to the equipment, and so it is important to
have the right seals installed. Selection of proper hydraulic and pneumatic seals is
depending on the following factors:
Application-Hydraulic or pneumatic; piston or rod; surface conditions of shaft and
housing bore; for use under dry running, lubrication, or without lubrication.
Size-Shaft outer diameter (seal inner diameter); bore diameter (seal outer diameter);
axial cross section and radial cross section.
Temperature-Fluid temperature and operating temperature. Both average and peak
temperatures should be taken into consideration.
Pressure-Static as well as dynamic pressure should be noticed. Maximum operating
pressure is also an important parameter.
Linear Velocity-Number of cylinder strokes, maximum speed, etc.
Media / Fluid-Type of media, its volume, etc.
WSI Wiper Seal

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