Hydraulic seals are products that include types such as rod seals, flange packing, and U-cups. They are specifically designed for applications that require high pressure, such as hydraulic cylinders. It is said to have a wide range of orientations and different types.
Before we delve into the orientation and types of hydraulic seals, here are some things to consider when shopping for such industrial products. The outer shaft, inner seal and housing bore diameters must be specified. The thickness and radial cross section should also be included in the list of considerations. Service limits such as operating speed and pressure, vacuum rating and temperature should be treated accordingly.
Various sealing orientations
There are various sealing directions for these industrial products. The first on the list is called a rod seal. A stem seal is a type of radial seal that fits specifically into the bore of the casing. The sealing lip is in contact with the shaft.
The second type is known as a piston seal. This is yet another type of radial seal and is a variation of the stem seal. Instead of the sealing lip being in contact with the shaft, the lip is in contact with the housing bore. It is on the shaft that the seal is pressed accordingly.
The other types of seal orientations are symmetrical and axial seals. A symmetrical seal, as the concept implies, functions symmetrically or the same as rod and piston seals. The axial seal, on the other hand, is in contact or on axis with the casing component.
Types of hydraulic seals
There are two categories for these industrial products. These are dynamic and exclusion stamps. A dynamic seal is one that is used to separate a fluid from possible contaminants. It is used to create a gap between moving and non-moving surfaces, such as those found in piston ring applications. When considering dynamic seals, it is important to focus on a variety of dimensions, such as inside diameters, outside diameters, axial cross section, radial cross section, and housing bore.
Exclusion seals are those used to separate contaminants from machine bearings. They remove any debris from the moving axes. These hydraulic seals can be subclassified into V-rings, wipers, and wipers. V-rings are the ones made of rubber, while wiper blades are the ones with lip seals that are flexible. Scrapers are those containing scraping edges used in the process of removing contaminants from bearings.