Series 2 - T-3A cavity and T-5A cavity, EPDM cartridge seal kit

990203014 : Series 2 - T-3A cavity and T-5A 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 2
Cartridge Thread 1"-14 UNS1"-14 UNS
Valve Hex Size 1 1/8 in.28,6 mm
Valve Installation Torque 45 - 50 lbf ft61 - 68 Nm
Cavity T-3A & T-5A
Used With [ + ]

What models can this kit be used with?

  • CXFA Free flow nose to side check valve
  • DFDA
    2-way, 2-stage, solenoid-operated directional poppet valve - flow 1-2
  • DFDB
    2-way, 2-stage, solenoid-operated directional poppet valve - flow 2-1
  • FDCB Fully adjustable pressure compensated flow control valve with reverse flow check
  • FLFA Filter
  • FPFK Pilot-operated, normally closed, electro-proportional throttle with reverse flow check
  • FXDA Fixed-orifice, pressure compensated flow control valve
  • NCEB Fully adjustable needle valve with reverse flow check
  • NFDC Fully adjustable needle valve
  • NFDD Fully adjustable needle valve
  • RBAA Direct-acting relief valve - pilot capacity
  • RGFA Low-pressure-range, direct-acting relief valve
  • RPGC Pilot-operated, balanced piston relief valve
  • RPGC8 Pilot-operated, balanced piston relief main stage with integral T-8A control cavity
  • RPGE Fast-acting, pilot-operated, balanced piston relief valve
  • XCCA All ports blocked cavity plug
Notes [ + ]
  • Install back-up rings and O-rings as shown in views.
  • See installation variations for models associated with alternative installation 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 [ + ]