The difference between Y seal and O seal

There are significant differences between Y-type seals and O-type seals in several aspects, and the following is a detailed comparison of the two:

First, the structure shape

Y-shaped sealing ring: The cross section is Y-shaped, which is a typical lip sealing ring. Y-type sealing rings can be further classified according to the ratio of length to width of the section, whether the height of the two lips is consistent and the different manufacturing materials.

O-type sealing ring: The cross-section is circular, the structure is relatively simple.

Second, performance characteristics

Y-shaped sealing ring

Excellent sealing performance: Due to its cross section shape design, it can provide higher contact pressure and tighter fit, thus showing excellent sealing effect in high pressure environments. According to the experimental data, the Y-type sealing ring can still maintain a stable seal under the working pressure of 40MPa.

High temperature and wear resistance: Usually using high-quality rubber materials, such as nitrile rubber, fluorine rubber, etc., can be used in the temperature range of -30 ° C to +150 ° C (or -40~150 ° C, or -30~80 ° C) for a long time, and has good wear resistance, reducing the frequency of maintenance and replacement.

Chemical corrosion resistance: can resist the corrosion of a variety of chemical media, such as acid, alkali, salt, etc., to ensure stable operation under harsh conditions.

Self-sealing effect: In the case of sealing, there is a normal pressure equal to the pressure of the medium at every point of contact with the sealing medium, the lip is circumferentially compressed, and the contact with the sealing surface becomes wider, while the contact stress increases. When the internal pressure rises again, the lip is more closely matched with the sealing surface, so the sealing is better.

O-ring seal

Wide applicability: Easy to install and disassemble, suitable for many types of mechanical seals, such as pumps, valves, hydraulic equipment, etc.

Good sealing: although the pressure resistance is relatively low (2.5MPa), the sealing effect is still reliable under low pressure, low temperature and general conditions. It can effectively prevent the leakage of liquid, gas and steam and ensure the safe operation of the equipment.

Corrosion resistance and aging resistance: with good corrosion resistance and aging resistance, can adapt to a variety of media corrosion, and long service life.

Dynamic and static versatility: It is not only suitable for static sealing, but also plays an excellent role in dynamic environments where there is relative movement between components, such as the sealing of hydraulic cylinder pistons and rotating shafts, with minimal dynamic friction.

3. Application scenarios

Y-shaped sealing ring

High pressure hydraulic system: Because of its excellent pressure resistance and sealing performance is widely used, for example, in the cylinder, piston rod and other parts of the seal, Y-ring can ensure the sealing and stability of hydraulic oil.

Pneumatic system: Excellent performance in pneumatic systems requiring high pressure stability, can be used for cylinder, valve and other parts of the seal, to ensure gas tightness and stability.

Extreme conditions: In extreme conditions such as petrochemical, high temperature and high pressure, it is favored for its high temperature, high pressure and chemical corrosion resistance.

O-ring seal

General sealing requirements: in low temperature, low pressure and general working conditions, because of its wide applicability and low cost and become the first choice. For example, in the sealing of containers and pipes in the food, chemical, pharmaceutical and other industries, the O-ring can meet the basic sealing requirements.

Cost-effectiveness: For cost-sensitive application scenarios, it is more attractive due to its low manufacturing costs and price advantages.

Y-type sealing ring and O-type sealing ring have their own advantages in structural shape, performance characteristics and application scenarios. In the actual selection, comprehensive consideration should be carried out according to the specific needs and environmental conditions to ensure that the most suitable sealing scheme is selected.