• TThe HMU style multi-lip rod u-seal combines the pressure-compensating, uni-directional characteristics of a u-seal with the multi-lip sealing effectiveness of compression-type stacked-packings. Made from premium materials, the HMU utilizes several sealing lip edges for dry rod performance while minimizing friction. The multi-lip design maintains a critical sealing edge even though increasing pressure moves the line of contact down towards the heel. N=BUNA-N, V=FLUOROCARBON NOTE: If Product number ends in 'U' it's constructed of Polyurethane, if sku ends in 'N' or 'V' it's Homogenous.
    • 80 A BUNA-N RUBBER
    • 90 A FLUOROCARBON
    • BUNA-N: -40° to +250° F
    • FC: -20° to +400° F
    • BUNA-N: 0 to 1,000 PSI
    • FC: 0 - 2,000 PSI
    • SPEED 3 FT/SEC
    • PART NUMBER (Prefix)(CS) - (ID) - (Height)
  • The HMU style multi-lip rod u-seal combines the pressure-compensating, uni-directional characteristics of a u-seal with the multi-lip sealing effectiveness of compression-type stacked-packings. Made from premium materials, the HMU utilizes several sealing lip edges for dry rod performance while minimizing friction. The multi-lip design maintains a critical sealing edge even though increasing pressure moves the line of contact down towards the heel. NOTE: If Product number ends in 'U' it's constructed of Polyurethane, if sku ends in 'N' or 'V' it's Homogenous.
    • MATERIAL 92A URETHANE
    • TEMPERATURE RANGE -40° to +200° F
    • PRESSURE RANGE 0 to 5,000 PSI
    • SPEED 3 FT/SEC
    • PART NUMBER (Prefix)(CS) - (ID) - (Height)
  • RTU ROD U-SEALS

    $8.04$57.50
    The twin lip design helps solve difficult rod sealing problems by providing lower friction, increased stability, and high dynamic lip force, while preventing air penetration from outside the cylinder.
    • MATERIAL 92A URETHANE
    • TEMPERATURE RANGE -40° to +225° F
    • PRESSURE RANGE 0 to 5,000 PSI
    • SPEED 3 FT/SEC
    • PART NUMBER (Prefix)(CS) - (ID) - (Height)
  • RTUB ROD U-SEALS

    $19.17$108.53
    Featuring high pressure and high shock load capability, this seal utilizes the same twin lip design found in Hercules Sealing Products' RTU style. With the main body of the seal molded from high performance polyurethane, this seal incorporates a dynamically designed nitrile energizer and a tough polyacetal anti-extrusion ring. RTUB is capable of pressures up to 10,000 psi in approved applications. Please consult Hercules Engineering for pressures above 6,000 psi.
    • 94 A URETHANE SEAL
    • RUBBER ENERGIZER
    • POLYACETAL ANTI-EXTRUSION RING
    • TEMPERATURE RANGE -50° to +230° F
    • PRESSURE RANGE 0 to 6,000 PSI
    • SPEED 3 FT/SEC
    • PART NUMBER (Prefix)(CS) - (ID) - (Height)
    MAXIMUM EXTRUSION GAP PRESSURE/MAX. DIAM. GAP: |2,400 PSI/.040|  |3,750 PSI/.032| |6,000 PSI/.024|  | 7,500 PSI/.016|  |10,000 PSI/.010|
  • RTUL ROD U-SEALS

    $16.82$46.49
    Molded from high performance polyurethane, Style RTUL Rod U-Seals feature an expander for good low pressure sealing. The twin lip feature reduces friction and promotes stability. NOTE: RTUSL has a canted coil energizer.
    • MATERIAL 95A URETHANE
    • TEMPERATURE RANGE -40° to +225°
    • PRESSURE RANGE 0 to 5,000 PSI
    • SPEED 3 FT/SEC
    • PART NUMBER (Prefix)(CS) - (ID) - (Height)
  • RU ROD U-SEALS

    $8.95$35.68
    Style RU seals are molded from high quality urethane and designed specifically for rod applications. P = HIGH PERFORMANCE MATERIAL UP TO +275° F
    • MATERIAL 90A URETHANE
    • TEMPERATURE RANGE -40° to +200° F
    • PRESSURE RANGE 0 to 5,000 PSI
    • SPEED 3 FT/SEC
    • PART NUMBER (Prefix)(CS) - (ID) - (Height)
  • UFN-EI ROD U-SEALS

    $7.52$149.88
    Incorporating a rubber seal lip, a rubberized fabric heel and an acetal back-up ring. This seal provides excellent sealability and high extrusion resistance.
    • RUBBER, FABRIC, ACETAL
    • TEMPERATURE RANGE -22° to +212° F
    • PRESSURE RANGE 0 to 5,800 PSI
    • SPEED 1.5 FT/SEC
    • PART NUMBER (Prefix)(CS) - (ID) - (Height)
  • UKR ROD U-SEALS

    $4.29$11.12
    UKR u-seals are designed to act as a positive sealing, low friction replacement for conventional rubber u-seals. Molded from polyurethane, UKR u-seals provide long life and high resistance against extrusion. Low friction allows these seals to run smoothly in lubricated or non-lucricated cylinder. Available for rod sealing, the flexible dynamic lip provides very low breakaway friction and steady motion.
    • MATERIAL 90A URETHANE
    • TEMPERATURE RANGE -40° to +200° F
    • PRESSURE RANGE 0 to 150 PSI
    • SPEED 3 FT/SEC
    • PART NUMBER (Prefix)(CS) - (ID) - (Height)
  • DPU PISTON U-SEALS

    $8.08$223.33
    Specifically designed as piston seals, these u-seals are engineered to seal on their outside diameter. They offer extended service life and maximum reliability in piston sealing.
    • MATERIAL 92A URETHANE
    • TEMPERATURE RANGE -65° to +230° F
    • PRESSURE RANGE 0 to 6,000 PSI
    • SPEED 3 FT/SEC
    • PART NUMBER (Prefix)(CS) - (ID) - (Height)
    MAXIMUM EXTRUSION GAP PRESSURE / MAX. DIAM. GAP: | 1,000 PSI/.032 | | 3,000 PSI/.015 | | 5,000 PSI/.012 | | 6,000 PSI/.009 |
  • PU PISTON U-SEALS

    $6.88$50.82
    Style PU seals are molded from high quality urethane and designed specifically for piston applications.
    • MATERIAL 90A URETHANE
    • TEMPERATURE RANGE -40° to +225° F
    • PRESSURE RANGE 0 to 5,000 PSI
    • SPEED 3 FT/SEC
    • PART NUMBER (Prefix)(CS) - (ID) - (Height)
  • UFN PISTON SEALS

    $8.52$36.71
    Constructed of a rubber seal lip with a rubberized fabric heel, these seals feature a poly-acetal bearing ring or a poly-acetal anti-extrusion ring. These seals offer excellent sealing ability and high pressure capability. Commonly are used with the SR retention rings.
    • MATERIAL RUBBER, FABRIC, ACETAL
    • TEMPERATURE RANGE -22° to +212° F
    • PRESSURE RANGE 0 to 5,800 PSI
    • SPEED 1.5 FT/SEC
    • PART NUMBER (Prefix)(CS) - (ID) - (Height)
  • UKP PISTON U-SEALS

    $4.24$76.75
    UKP u-seals are designed to act as a positive sealing, low friction replacement for conventional rubber u-seals. Molded from polyurethane, UKP u-seals provide long life and high resistance against extrusion. Low friction allows these seals to run smoothly in lubricated or non-lubricated cylinder. Available for bore sealing, the flexible dynamic lip provides very low breakaway friction and steady motion.
    • MATERIAL 90A URETHANE
    • TEMPERATURE RANGE -40° to +200° F
    • PRESSURE RANGE 0 to 150 PSI
    • SPEED 3 FT/SEC
    • PART NUMBER (Prefix)(CS) - (ID) - (Height)
  • PRC Rings

    $6.15$84.05
    Used as a companion to our 'B' lip configured, Style 850 U-Seal. Style 855 PRC rings convert a uni-directional u-seal into a bi-directional seal. NOTE: Height dimension is the increase in groove width required.
      • MATERIAL 95A URETHANE
      • TEMPERATURE RANGE -40° to +200° F
      • PRESSURE RANGE 0 to 5,000 PSI
      • SPEED 3 FT/SEC
      • PART NUMBER (Prefix)(CS) - (Inside Diameter)
    • 870 U-SEALS

      $1.16$110.04
      Style 870 u-seals are precision molded from Buna-N synthetic rubber. Style 870 u-seal numbers conform in size to Army-Navy specification AN6226.
      • MATERIAL 70A BUNA-N RUBBER
      • TEMPERATURE RANGE -40° to +240° F
      • PRESSURE RANGE 0 to 500 PSI
      • SPEED 3 FT/SEC
      • PART NUMBER (Prefix)(CS) - (A-N Dash Number)
    • DSU U-SEALS

      $7.28$338.65
      Used interchangeably for piston or rod sealing, these u-seals employ the same tough urethane material found in our Heavy Duty Rod and Piston U-Seals.
      • MATERIAL 92A URETHANE
      • TEMPERATURE RANGE -40° to +230° F
      • PRESSURE RANGE 0 to 4,000 PSI
      • SPEED 3 FT/SEC
      • PART NUMBER (Prefix)(CS) - (Inside Dia) - (Height)
    • HRU U-SEALS

      $2.51$174.26
      Style HRU u-seals are precision molded from 80 Durometer Buna-N rubber. Sizes include those found in Army-Navy spec. AN6226 and narrow cross-section sizes found in J.I.C. cylinders and the popularly termed 'Huva Cup'.
      • MATERIAL 80A BUNA-N RUBBER
      • 90A FLUOROCARBON
      • TEMPERATURE RANGE BUNA-N: -40° to +250° F
      • FC: -20° to +400° F
      • PRESSURE RANGE BUNA-N: 0 to 1,250 PSI
      • FC: 0 to 2,000 PSI
      • SPEED 3 FT/SEC
      • PART NUMBER (Prefix)(CS) - (Inside Dia) - (Height)

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