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Model

990018006

Model: 990018006

Series 4 - T-18A cavity, Viton, cartridge seal kit

Cavity: T-18A

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Model

990018006

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.

  • The shelf life for this cartridge seal kit is twenty years from date of purchase. This date will be printed on the kit packaging.
  • Cavity
  • Series
  • Cartridge Thread
    M48
  • Valve Hex Size
    1 5/8 in.
  • Valve Installation Torque
    350 - 375 lbf ft

What models can this kit be used with?

  • CNIC Fixed-orifice, non-pressure compensated, flow control valve with reverse flow check
  • CNJC Free flow nose to side check valve with bypass orifice
  • CNKC Free flow nose to side check valve with bypass orifice
  • CXID Free flow side to nose check valve
  • CXJA Free flow nose to side check valve
  • CXKA Free flow nose to side check valve
  • DFFA 2-way, 2-stage, solenoid-operated directional poppet valve - flow 1-2
  • DFFA8 2-way, poppet directional valve with integral T-8A control cavity - control 1-2
  • DFFB 2-way, 2-stage, solenoid-operated directional poppet valve - flow 2-1
  • DFFI 2-way, 2-stage, solenoid-operated directional poppet valve - flow 1-2 (740 Series)
  • DFFJ 2-way, 2-stage, solenoid-operated directional poppet valve - flow 2-1 (740 Series)
  • FCFB Fixed-orifice pressure compensated flow control valve with reverse flow check
  • FDFA Fully adjustable pressure compensated flow control valve with reverse flow check
  • FLJA Filter
  • FQIA Fixed-orifice, flow fuse valve
  • FXFA Fixed-orifice, pressure compensated flow control valve
  • NCGB Fully adjustable needle valve with reverse flow check
  • NCGC Fully adjustable needle valve with reverse flow check
  • NFFC Fully adjustable needle valve
  • NFFD Fully adjustable needle valve
  • RPKC Pilot-operated, balanced piston relief valve
  • RPKC8 Pilot-operated, balanced piston relief main stage with integral T-8A control cavity
  • RPKD Air-controlled, pilot-operated, balanced piston relief valve
  • RPKE Fast-acting, pilot-operated, balanced piston relief valve
  • RQKB Kick-down, pilot-operated, balanced piston relief valve
  • XKCA All ports blocked cavity plug
  • XKOA All ports open cavity plug
  • FPJP Pilot-operated, normally closed, electro-proportional throttle with reverse flow check - (740 Series)
  • 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.
  • Part
    Description
    Quantity
    View
  • 500-101-127
    O-Ring
    1
    B
  • 500-102-131
    O-Ring
    1
    A
  • 515-102-127
    Backup Ring
    2
    B
  • 515-102-131
    Backup Ring
    1
    A
  • 999-019-008
    Literature
    1

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