DESCRIPTION
The UA-S profile is a symmetrical lip seal for use in either rod or piston sealing applications. The thin, flexible lip design reacts to low pressure and provides an extremely smooth, steady movement with less break away force required because of the inherent low friction.
The UA-S design utilizes a beveled lip, ideal for wiping fluid film. The UA-S is available from a variety of rubber compounds to cover a wide range of applications. While the UA-S u-cup is primarily designed for pneumatic applications, it can also be used in low to medium pressure hydraulic applications. The pressure range of this seal may be extended by the utilization of supporting back up rings.
Many sizes are also readily available in 90-durometer Fluorocarbon for a wide range of chemical media and temperatures up to 400F
This seal is available in other materials and durometers. Please consult with the H&D sales staff for details.
SEAL INFORMATION
Material Type: FLUOROCARBON
Durometer (Shore A) NITRILE: 80
Durometer (Shore A) FLUOROCARBON: 90
Temperature Range (F) NITRILE: -40 TO 230
Temperature Range (F) FLUOROCARBON: -20 TO 400
Max Pressure (psi) 80A NITRILE: 1250
Max Pressure (psi) 90A FLUOROCARBON: 2000
Extrusion Gap at Max Pressure with Wear Rings (in): 0.018
Extrusion Gap WITHOUT WEAR RINGS at Max Pressure based on Seal Cross-Section (in):
- .125 CS: 0.002
- .187 CS: 0.003
- .250 CS: 0.003
- .312 CS: 0.004
- .375 CS: 0.004
- .437 CS: 0.005
- .500 CS: 0.005
- .625 CS: 0.006
- .750 CS: 0.007
- 1.000 CS: 0.009
Max Speed (ft/sec): 1.6
Mating Surface Roughness - Ra (µin) - DYNAMIC: 3<>12
Mating Surface Roughness - Ra (µin) - STATIC: 63 MAX
Part Number Definition (Inch): UA-(CS)(ID)(HT)S - OR S-V FOR FLUOROCARBON
Additional Part Number Definition (Inch): 2 X 2-1/2 X 1/4 = UA-25002000S
NOTE: DUROMETERS DIFFERENT THAN THE STANDARDS SHOWN ABOVE ARE DENOTED AT THE END OF THE PART NUMBER (EX: -70D)