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Piston seal is a reciprocating seal. it is one of the key components in hydraulic equipment. Leaking pistons can cause operational problems and environmental pollution. So, always prefer to buy from a professional piston seals catalogue company.
First, the piston seal must be static and leak-free. If the seal leaks before movement, its size may be inappropriate. Furthermore, the seal or piston rod may be damaged.
However, a perfect seal under static conditions may leak significantly when the shaft reciprocates. Because the dynamic seal mechanism is very different from the static seal mechanism.
During reciprocating motion, the seal mainly relies on the elastic fluid dynamic pressure to achieve the sealing effect.
First of all, in the outer stroke, piston seals catalogue needs to scrape most of the hydraulic fluid from the surface of the piston rod. But there will always be a thin film of liquid that sticks to the sliding surface. Moreover, it is dragged across the interface between the seal and the piston rod.
In short, the thicker the film, the better the lubricating effect. And the lower the power consumption. The disadvantage is that the greater the amount of leakage. Similarly, the sealing quality is reduced.
Furthermore, the thinner the film, the worse the lubricating effect. The power consumption increases, and the service life decreases. There must be a compromise between dynamic sealing and good lubrication.
The function of the wear ring is to provide guidance and support for the piston. At the same time, it can prevent metal contact between the moving parts of the cylinder. Subsequently, piston seals catalogue optimizes the performance of the sealing system.
The dust ring and wear ring are installed in the hydraulic cylinder. When the piston rod retracts into the system, it is used to:
to prevent them from contaminating the hydraulic medium. It also prevents them from damaging the wear rings, seals and other components.
The tightness of the cylinder is an important parameter that characterizes the technical status of the cylinder piston group. Subsequently, it has a great impact on the engine’s work. Moreover, it directly affects the power and economy of the engine.
The evaluation indexes of piston seals catalogue cylinder tightness mainly include:
There are many types of rubber O-rings, and their uses are different.
A professional piston seals catalogue company must consider this. The physical properties of the O-ring etc. are used to meet the real needs of customers.
Therefore, when choosing an O-ring product, it is necessary to consider:
Then, when we choose a piston seals catalogue, what factors we should consider specifically.
custom o rings are the most widely used in all sealing products. The production process is relatively simple. Similarly, the materials used are many. The O-ring is a typical sealing effect generated by deformation due to extrusion.
When installed, it generates contact pressure with the sealing surface. When the pressure is greater than the pressure of the sealing medium, the sealing effect is generated. Moreover, if it is less than that, leakage will occur.
It has been found in many tests that most of the causes of o-ring damage do not come from the o-ring design or pressure. If the good piston seals catalogue design only increases the pressure unilaterally, it will not cause the o-ring seal.
The root cause of the damage is due to the permanent deformation of the o-ring under the high temperature. And high pressure of the working environment and the bite caused by being squeezed into the gap.
(1) Factors of compression and tension of o-ring
Due to the different formulations of o-ring compounds, the compression and stretching amounts of o-rings are also different. The product will have the imagination of compressive stress relaxation under long-term compression.
This phenomenon will gradually expand with time. The longer the time, the smaller the amount of compression and tension will be. Moreover, it will result in insufficient elasticity and leakage.
Generally, the temperature is very important for the relaxation of the o-ring. No matter what kind of rubber material, it will accelerate its aging speed at high temperature.
When the temperature in the environment is higher, the deformation of the gas compression will be greater. When the piston seals catalogue deformation exceeds 40% of the time, the o-ring will slowly lose its elasticity. Similarly, it will cause leakage.
When we install o ring, there will be initial stress. This long-term relaxation of the sealing ring and the gradual decrease of the temperature will slowly disappear.
In some cases, it may disappear with a sharp drop in temperature. Even if the rubber material is resistant to low temperature, it will not be greater than 25%.
So, when setting the initial stress when installing the o-ring, piston seals catalogue company must fully consider the temperature factor in the working
Compared with the above two factors, the pressure of the medium has a greater influence on the deformation of the custom o ring.
which is the most common situation that causes the deformation of the o-ring in all operating conditions. With the development of modern hydraulic equipment, the continuous pressure will cause permanent deformation of the o-ring.
This deformation is irreversible. So, we should use different materials for different working pressures. Select a relatively pressure-resistant rubber material. Correspondingly, in order to cope with higher working pressure, the hardening degree of the seal ring of the pressure-resistant material will also increase.
Note: Custom O rings are universally popular in pneumatics and hydraulics as static as well as dynamic elements.
piston seals catalogue has several advantages over other types of seals:
Oil resistant o-rings
Oil-resistant o-rings are made from nitrile butadiene rubber. Moreover, it is the most cost-effective and widely used elastomer in the sealing industry. This synthetic rubber is ideal for:
The choice of material plays a decisive role in successfully creating piston seals catalogue.
Oil-resistant o-rings have a wide range of advantages. Subsequently, it makes them indispensable in many applications. piston seals catalogue has excellent chemical resistance to:
Other key benefits of this material include:
With excellent resistance to many automotive fluids, oil-resistant custom o rings are commonly used in:
Other rubbers often do not have the same resistance characteristics. Similarly, it reacts negatively with fuel, oil, and other fluids.