HU Homogeneous U-Cup | Buna-N Hydraulic U-Cup Seal | HydraPak Seals, Inc
Notice: 10% tariff fee now in effect.

HU21-2.81-21-90N

HU 80A Buna-N Homogeneous U-Cup, 2-13/16 X 3-1/4 X 7/32

Part #:
HU21-2.81-21-90N
Min. Order Qty: 1

Brand: HPSI

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HPSI

The HU Homogeneous U-Cup is precision molded from 80A Buna-N or 90A fluorocarbon rubber for reliable hydraulic sealing in dynamic applications. Commonly used as piston, rod, and cushion seals in industrial cylinders, the HU U-Cup provides dependable sealing performance across a wide range of operating conditions. Fluorocarbon versions (suffix V) offer enhanced heat resistance for elevated temperature applications.

Cross Section      :      7/32 in
Height      :      7/32 in
Inside Diameter      :      2-13/16 in
Material      :      80A Buna-N Rubber
Outside Diameter      :      3-1/4 in
Part Number      :      (Prefix)(C/S)-(ID)-(H)(Material)
Pressure Range      :      0 TO 1,250 PSI
Temperature Range      :      -40° to 250°F
  • Precision molded from 80A Buna-N rubber
  • Provides reliable piston, rod, and cushion sealing
  • Suitable for industrial hydraulic cylinders
  • Durable rubber construction for long service life
  • Delivers dependable dynamic sealing performance

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