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 ten years from date of purchase. This date will be printed on the kit packaging.

What models can this kit be used with?

• CDAP Mechanically operated, back-to-back check valve
• CDAQ Mechanically operated, back-to-back check valve
• CNAC Fixed-orifice, non-pressure compensated, flow control valve with reverse flow check
• CNBC Free flow nose to side check valve with bypass orifice
• CSAN Insert style, single ball shuttle valve with signal at port 2
• CSAW Single ball shuttle valve with signal external
• CSAY Single ball shuttle valve with signal at port 2
• CXAD Free flow side to nose check valve
• CXBA Free flow nose to side check valve
• CXBG Flush mount, free flow nose to side check valve
• CXBM Insert style, free flow nose to side check valve
• DFBD FLeX Series 2-way, 2-stage, solenoid-operated directional poppet valve with reverse flow check - flow 2-1, 3000 psi (210 bar)
• DFBE FLeX Series 2-way, 2-stage, solenoid-operated directional poppet valve with reverse flow check - flow 2-1, 3000 psi (210 bar)
• DFBF FLeX Series 2-way, 2-stage, solenoid-operated directional poppet valve with reverse flow check - flow 2-1
• DFBG FLeX Series 2-way, 2-stage, solenoid-operated directional poppet valve with reverse flow check - flow 2-1
• DTBF FLeX Series 2-way, direct-acting, solenoid-operated directional blocking poppet valve
• FCBB Fixed-orifice pressure compensated flow control valve with reverse flow check
• FPBD FLeX Series pilot-operated, normally closed, electro-proportional throttle - flow 2-1 - 3000 psi (210 bar)
• FPBE FLeX Series pilot-operated, normally closed, electro-proportional throttle with reverse flow check - flow 2-1 - 3000 psi (210 bar)
• FPBF FLeX Series pilot-operated, normally closed, electro-proportional throttle - flow 2-1
• FPBG FLeX Series pilot-operated, normally closed, electro-proportional throttle with reverse flow check - flow 2-1
• FPBI FLeX Series pilot-operated, normally open, electro-proportional throttle - flow 2-1
• FPBJ FLeX Series pilot-operated, normally open, electro-proportional throttle with reverse flow check - flow 2-1
• FPBM FLeX Series pilot-operated, normally open, electro-proportional throttle - flow 2-1 - 3000 psi (210 bar)
• FPBN FLeX Series pilot-operated, normally open, electro-proportional throttle with reverse flow check - flow 2-1 - 3000 psi (210 bar)
• FPBU FLeX Series electro-proportional, blocking poppet throttle - normally closed
• FQBA Fixed-orifice, flow fuse valve
• FXBA Fixed-orifice, pressure compensated flow control valve
• NCBB Fully adjustable needle valve with reverse flow check
• NFBC Fully adjustable needle valve
• RDBA Direct-acting relief valve
• RPCC Pilot-operated, balanced piston relief valve
• RQCB Kick-down, pilot-operated, balanced piston relief valve
• XZCA All ports blocked cavity plug
• XZCC Flush mount, all ports blocked cavity plug
• XZOA All ports open cavity plug
• XZOC Flush mount, all ports open cavity plug
• FCBC Fixed-orifice pressure compensated flow control valve with reverse flow check
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