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Content

            1. Homogenous U-Cup Size Charts
            2. Homogenous U-Cup Description
            3. Profile
            4. Part Numbers
            5. Groove Configurations
                        
 




Description

Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston seal. The design is suited for situations where space is limited. The HU seal is typically made from an 80 durometer Nitrile but also comes in Viton®/fluorocarbon, Neoprene and other homogenous materials.

As pressure is applied to the homogenous U-cup the seal experiences an increase in sealing force until it reaches the maximum pressure the seal can handle. Homogeneous U-cup seals can handle up to 500 PSI; however, if you have applications that require higher pressure capabilities please consult a Hi-Tech Seals’ sales representative.


Profiles

Homogenous U-Cup

The standard homogenous u-cup has a u-shaped groove formed in such a manner that there is an inside and outside sealing lip.




Part Numbers



* Height is only listed if the axial height is greater than the cross-section.






 Material:
Temp. Range
 Nitrile
-40°C
to
120°C
 Viton®/Fluorocarbon
-26°C
to
204°C
 Neoprene
-40°C
to
121°C
Example: HU - 0437 0688 - Nitrile Homogenous U-Cup - 7/16” Nom. I.D., 11/16” Nom. O.D.

Go to Homogenous U-Cup size charts.



Groove Configuration






A
B
C
D
Seal I.D.
Dim.
Groove
Tol.
Rod
Tol.
Throat Ø
Seal
O.D.
Dim
C. Bore
Tol.
Gland
Tol.
Piston Ø
Dim
Tol.
Dim
Tol
0.125 -
1.500
Nom ID
+ 0.000
- 0.001
+ 0.000
- 0.001
ID + 0.001
+ 0.002
- 0.000
0.250 -
2.375
Nom OD
+ 0.003
- 0.000
+ 0.002
- 0.000
OD - 0.002
+ 0.000
- 0.001
1.506 -
2.500
"
+ 0.000
- 0.002
+ 0.000
- 0.001
ID + 0.001
+ 0.002
- 0.000
2.437 -
4.750
"
+ 0.004
- 0.000
+ 0.003
- 0.000
OD - 0.002
+ 0.000
- 0.002
2.506 -
8.000
"
+ 0.000
- 0.003
+ 0.000
- 0.002
ID + 0.001
+ 0.003
- 0.000
5.000 -
7.750
"
+ 0.004
- 0.000
+ 0.003
- 0.000
OD - 0.003
+ 0.000
- 0.003
8.250+
"
+ 0.000
- 0.004
+ 0.000
- 0.003
ID + 0.002
+ 0.004
- 0.000
8.000+
"
+ 0.005
- 0.000
+ 0.003
- 0.000
OD - 0.003
+ 0.000
- 0.004
 Groove Width: The groove width is the seal height + 1/32nd ± 0.010