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Model

990023014

Model: 990023014

Series 3 - T-23A cavity, EPDM, cartridge seal kit

Cavity: T-23A

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Model

990023014

See CAD Files tab below to request images.

Technical specifications

Sun offers replacement seal kits for all cartridge models. These kits include all of the external seals on the cartridge along with installation instructions. Seal kits are available in Buna-N and Viton for all models, along with EPDM and polyurethane for many models. Please note: Converting the external seals from one material to another does not ensure fluid compatibility with that material due to the existence of internal seals within the cartridge.

  • EPDM seals have no limited shelf life.
  • EPDM seals are purple in color for easy stock and field identification.
  • Cavity
  • Series
  • Cartridge Thread
    M36
  • Valve Hex Size
    1 1/4 in.
  • Valve Installation Torque
    150 - 160 lbf ft

What models can this kit be used with?

  • DKHS Normally closed, balanced poppet, logic element - pilot-to-open
  • DOHS Normally open, balanced poppet, logic element - pilot-to-close
  • FKFB 2-way, pilot-shifted, proportional throttle with bleed down
  • FKGA 2-way, pilot-shifted, proportional throttle, high capacity
  • PSHB Direct-acting, pressure reducing/relieving valve with drain to port 4
  • PSHT Direct-acting, pressure reducing/relieving main stage piloted from port 4
  • PVHA Pilot-operated, pressure reducing/relieving valve with drain to port 4
  • PVHB Ventable, pilot-operated, pressure reducing/relieving valve
  • PVHL8 Pilot-operated, pressure reducing/relieving main stage with integral T-8A control cavity and drain to port 4
  • RVGD8 Ventable, pilot-operated, balanced piston relief main stage with integral T-8A control cavity and drain to port 4
  • Install back-up rings and O-rings as shown in views.
  • When installing continuous back-up rings, use the same technique and the same care used to install O-rings.
  • When installing cartridge - be sure to torque to recommended value.
  • Cartridges with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
  • Part
    Description
    Quantity
    View
  • 500-701-120
    O-Ring
    1
    D
  • 500-701-124
    O-Ring
    1
    C
  • 500-701-126
    O-Ring
    2
    A,B
  • 525-006-121
    Backup Ring
    2
    D
  • 525-006-123
    Backup Ring
    1
    C
  • 525-006-126
    Backup Ring
    3
    A,B

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