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

990023014 : Series 3 - T-23A cavity, EPDM, cartridge seal kit
Technical Features [ + ]

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.
Technical Data [ + ]
Series 3
Cartridge Thread M36M36
Valve Hex Size 1 1/4 in.31,8 mm
Valve Installation Torque 150 - 160 lbf ft203 - 217 Nm
Cavity T-23A
Used With [ + ]

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
Notes [ + ]
  • 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.
Additional Resources [ + ]