Common hydraulic seal classification
Common hydraulic seal classification
Different types of seals are available depending on the application requirements, such as V ring, U ring, O ring, Y ring, etc.The original type of sealing ring is different, the medium resistance, hardness, and range of use are different! YD seals will guide you to learn more knowledge about hydraulic seal.
1, V-ring seal
It is an axially acting elastic rubber seal that acts as a pressureless seal for the shaft. The sealing lip has good mobility and adaptability, can compensate for large tolerances and angular deviations, can prevent internal grease or oil from leaking out, and can prevent external splashing or dust from entering.
2, U-ring
Commonly used in the manufacture of reciprocating seals in hydraulic systems.
Widely used in the sealing of hydraulic cylinders in construction machinery.
3, O-ring seal
Mainly used for static sealing and reciprocating seals.
For rotary motion seals, only for low speed rotary seals.
4, Rectangular seal
Generally installed in a groove with a rectangular cross section on the outer or inner circle to seal.
5, Y-ring seal
Widely used in reciprocating seals.
In addition, there is a spring tension (spring energy storage) seal, which is a spring added to the PTFE sealing material, there are O-spring, V-spring, U-spring.
6, YX type sealing ring for holes
Product use: used for the sealing of pistons in reciprocating hydraulic cylinders.
Scope of application: TPU: general hydraulic cylinder, general equipment hydraulic cylinder.
CPU: Hydraulic cylinders for construction machinery and cylinders for high temperature and high pressure.
Material: Polyurethane TPU, CPU, rubber.
Product hardness: HS85 ± 2 °A.
Operating temperature: TPU: -40 to +80 ° C CPU: -40 to +120 ° C.
Working pressure: ≤32Mpa.
Working medium: hydraulic oil, emulsion.
7, YX type hole retaining ring (seal ring)
Product use: This standard is applicable to the use of YX-type sealing ring when the working pressure of the cylinder is greater than 16MPa, or to protect the sealing ring when the cylinder is eccentrically stressed.
Working temperature: -40 ~ +100 °C.
Working medium: hydraulic oil, emulsion, aquatic product hardness: HS92±5A Material: polytetrafluoroethylene.
8, YX type seal ring for shaft
Product use: It is used for the sealing of piston rod in reciprocating hydraulic cylinder.
Scope of application: TPU: general hydraulic cylinder, general equipment hydraulic cylinder.
CPU: Hydraulic cylinders for construction machinery and cylinders for high temperature and high pressure.
Material: Polyurethane TPU, CPU, rubber.
Product hardness: HS85 ± 2 °A.
Working temperature: TPU: -40 ~ +80 °C CPU: -40 ~ +120 ° C
Working pressure: ≤32Mpa.
Working medium: hydraulic oil, emulsion.
9. YX type retaining ring for shaft (sealing ring)
Product use: This standard is applicable to the use of YX-type sealing ring when the working pressure of the cylinder is greater than 16MPa, or to protect the sealing ring when the cylinder is eccentrically stressed.
Working temperature: -40 ~ +100 °C.
Working medium: hydraulic oil, emulsion, water.
Product hardness: HS92 ± 5A.
Material: Teflon according to: corporate standards.
10, O-type rubber sealing ring (GB1235-76)
Product use: O-type rubber sealing ring in this standard is suitable for hydraulic and pneumatic systems and various mechanical equipment and components. It seals under static or moving conditions in the specified pressure, temperature and different liquid and gas media.
Working temperature: -40 ~ +230 °C.
Working pressure: <10 ~ 220Kg, f / cm.
Working medium: air, water, oil.
Product hardness: 40 ~ 85 ± 2A.
Material: nitrile rubber, silica gel, fluorine rubber, ethylene propylene rubber.
11. O-ring seal ring (seal ring)
Product use: This standard is applicable to the O-ring when the cylinder pressure is greater than 10MPa.
Working temperature: -100～200°C
Working medium: hydraulic oil, emulsion, water
Material: PTFE according to: JB/ZQ4224-86 is adapted to GB1235-76
12, J-type skeletonless dust ring (sealing ring)
Product use: It is used for dustproofing in the reciprocating cylinder, the piston rod or the stem of the cylinder.
Scope of application: TPU: engineering machinery, general machinery, cylinder type valves.
CPU: Engineering machinery cylinders, oil cylinders with poor working conditions.
Material: polyurethane, nitrile rubber.
Working temperature: -40 ~ 120 °C.
Product hardness: HS80 ± 5A according to: JB/T6657-1993.
Different seal products have different uses, if you are interested, you can email us or visit our website http://www.wonepart.com/product-list/seal, there are more details for your reference.
