DSH-Find Hydraulic Piston Seal Design U-cup Hydraulic Piston Seal-7
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Yxd-PU U-Cup Hydraulic Piston Y Seal

Yxd-PU U-Cup Hydraulic Piston Y Seal

Type
YxD
Delivery Time
3-7 days
Quality
High-quality
Service
Standard product/Customized product
Brand
DSH
Price
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U cup seal has a U-shaped cross-section, and Y seal has a Y-shaped cross-section, and they are typical lip seals. Although U cup seal is a little bit different from Y seal in shape, they are often thought of the same sort of seal concerning their working principles. U cup seal, additionally named U cup piston seal, stems in various shapes and materials. Shapes comprise single lip U-cups, twin lip U-cups, rod seals with or without anti-extrusion rings, and materials chiefly include rubber, highly saturated nitrile, nitrile (Buna-N), PTFE, Fluorocarbon (FKM) or Urethane. Y-type/U cup piston seal can be divided into lips with different heights. Y seals are used for holes or shafts according to whether the heights of two lips are the same or not.

U cup seals refer to several kinds of seal, namely, rod U-cups, piston U cups, symmetrical U-cups, and A.N. type U cups. U cup seal/Y seal or its various modified shapes, such as piston U seal or piston rod, is exclusively developed for pneumatic use and distinct from the similar seals used in hydraulics. There are many different U-cup seal configurations can be found in DSH Seals to seal that demanding application properly.

The U cup piston seal is broadly applied in the reciprocating dynamic sealing devices, which usually means the U cup seal or Y seal is mainly used for reciprocating sealing. Out of that working principle, we can know that the lip side of the Y seal or U cup seal must be installed to face the high-pressure side, and the Y seal ring can only work in one direction.

 

Features

The Y seals/U-cup piston seals in DSH Seals are well accepted by cylinder manufacturers and equipment builders. The U-cup seal is a specialized piston seal design, developed from the standard symmetrical U-cup. It assures improved sealing performance due to the following features:

1. Improved lip design. Both lips have precision knife trimmed chamfers to provide complete circumferential lip contact.

2. Larger than the groove for which it is intended, which ensures a tight fit in the slot to prevent movement of the seal during cylinder operation.

3. Reliable sealing performance. There are enough contact area and pre-load to guarantee its sealing effect.

4. Small frictional resistance. This feature enables the seal to provide smooth movement.

5. Shrinkage and low-temperature leakage resistant.

6. Good pressure resistance. It can work under a wide application pressure range without failure, with working pressure up to 40MPa.

7. Good distortion resistance.

8. High reciprocating speed. Its running speed reaches average 0.5m/s, which makes it especially suitable for the hydraulic cylinder in heavy machinery.

9. Simple structure and easy to install.



◆◆ PTFE,NBR,FKM,PU


Material DescriptionPTFE, PU, FKM and NBR  and so on.
Available ColorBlack, green, brown, white, red, blue, gold and so on
Material StrengthPiston Y ring in PU material has excellent wear resistance, high pressure resistance, low permanent compression deformation, and strong resistance to extrusion.
Temperature-35~+120℃
Speed≤1m/s
Pressure≤40MPa
MediumMineral oil based hydraulic fluids,barely flammable hydraulic fluids,water,air and others.
Applied DeviceStandard cylinders /Machine tools/Injection moulding machines/Presses, etc.


DSH-Find Hydraulic Piston Seal Design U-cup Hydraulic Piston Seal
DSH-Find Hydraulic Piston Seal Design U-cup Hydraulic Piston Seal-1
DSH-Find Hydraulic Piston Seal Design U-cup Hydraulic Piston Seal-2
DSH-Find Hydraulic Piston Seal Design U-cup Hydraulic Piston Seal-3
DSH-Find Hydraulic Piston Seal Design U-cup Hydraulic Piston Seal-4



◆◆ U-Cup For Piston - YxD


DSH-Find Hydraulic Piston Seal Design U-cup Hydraulic Piston Seal-5

Technical Data

PressureTemperatureSliding speedMedium
Standard≤40 MPa-35…+120 ℃≤1 m/sMineral oil based hydraulic fluids,barely flammable hydraulic fluids, water,air and others.
Material
Standard PU(Shore90-95A)
Pressure160bar250bar400bar
Max Gap EE≤0.6mmE≤0.5mmE≤0.4mm
Order Example for standard version:
Diameter D=100mm 
Order Code: YxD 100*88*14
Installation Dimension table based on Metric Size(mm)
D H9d h9HL1 +0.2L2 +0.2R1≤C≥
20~28D-688.511.50.23
30~55D-8101112.50.23
55~160D-121415170.43.5
105~300D-16181921.50.85
320~650D-242426290.86.5
Order NumberD H9d h9L1 +0.2L2 +0.2
Order NumberD H9d h9L1 +0.2L2 +0.2
YxD020201488.511.5YxD140140128141517
YxD022221688.511.5YxD140A140124181921.5
YxD025251988.511.5YxD150150138141517
YxD028282288.511.5YxD150A150134181921.5
YxD0303022101112.5YxD160160148141517
YxD0323224101112.5YxD160A160144181921.5
YxD0353527101112.5YxD180180164181921.5
YxD0363628101112.5YxD190190174181921.5
YxD0404032101112.5YxD200200184181921.5
YxD0454537101112.5YxD210210194181921.5
YxD0505042101112.5YxD220220204181921.5
YxD0555547101112.5YxD230230214181921.5
YxD055A5543141517YxD240240224181921.5
YxD0606048141517YxD250250234181921.5
YxD0636351141517YxD280280264181921.5
YxD0656553141517YxD290290274181921.5
YxD0707058141517YxD300300284181921.5
YxD0757563141517YxD320320296242629
YxD0808068141517YxD330330306242629
YxD0858573141517YxD340340316242629
YxD0909078141517YxD350350326242629
YxD0959583141517YxD360360336242629
YxD10010088141517YxD380380356242629
YxD10510593141517YxD400400376242629
YxD105A10589181921.5YxD420420396242629
YxD11011098141517YxD430430406242629
YxD110A11094181921.5YxD450450426242629
YxD120120108141517YxD480480456242629
YxD120A120104181921.5YxD500500476242629
YxD125125113141517YxD560560536242629
YxD125A125109181921.5YxD600600576242629
YxD130130118141517YxD630630606242629
YxD130A130114181921.5YxD650650626242629
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DSH-Find Hydraulic Piston Seal Design U-cup Hydraulic Piston Seal-11