DESCRIPTION
This seal is the Hallite T511. The square profile, straight-lip, loaded polypack is a U-cup utilizing a polyurethane shell energized by a highly resilient O-ring. At zero or low pressure the O-ring helps to increase the sealing force preventing any bypass. As the system pressure rises the sealing force increases and the O-ring ensures complete lip actuation under most conditions.
This seal is ideally suited for single-acting piston applications but they can be used back-to-back in double-acting piston applications when installed in separate grooves on the piston.
SEAL INFORMATION
Material Type (Primary Seal): POLYURETHANE
Material Type (Energizer): 70A NITRILE
Durometer (Shore A): 93
Temperature Range (F): -40 TO 230
Extrusion Gap at Various Pressures (in):
- 2,400 PSI: 0.024
- 3,750 PSI: 0.020
- 5,000 PSI: 0.016
Max Speed (ft/sec): 1.5
Mating Surface Roughness - Ra (µin) - DYNAMIC: 4<>16
Mating Surface Roughness - Ra (µin) - STATIC: 63 MAX
Part Number Definition (Inch): UH-(CS)(ID)
Additional Part Number Definition (Inch): 2 X 2-1/2 X 1/4 = UH-25002000 (OR UH-25002000B)