Series 4 - T-19A cavity, Polyurethane cartridge seal kit

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.
• Polyurethane seals have a higher tensile strength, are more abrasion/extrusion resistant, and are well suited for high cycle and high pressure applications.

What models can this kit be used with?

• CBHA 3:1 pilot ratio, restrictive counterbalance valve
• CBHG 4.5:1 pilot ratio, restrictive counterbalance valve
• CBIA 3:1 pilot ratio, standard capacity counterbalance valve
• CBIB 1.5:1 pilot ratio, standard capacity counterbalance valve
• CBIG 4.5:1 pilot ratio, standard capacity counterbalance valve
• CBIH 10:1 pilot ratio, standard capacity counterbalance valve
• CBIL 2.3:1 pilot ratio, standard capacity counterbalance valve
• CBIY 2:1 pilot ratio, standard capacity counterbalance valve
• CKIB Pilot-to-open check valve with standard pilot
• CKID Pilot-to-open check valve with sealed pilot
• CKIV Vented pilot-to-open check valve - atmospherically referenced
• CNID Free flow side to nose check valve with bypass orifice and port 3 blocked
• CNJE Pilot-to-close check valve with bypass orifice
• COJA Pilot-to-close check valve
• COKA Pilot-to-close check valve
• CXIE Free flow side to nose check valve with port 3 blocked
• CXJC Free flow nose to side check valve with port 3 blocked
• DKJC Normally closed, balanced poppet, logic element - pilot-to-open
• DKJD Normally closed, balanced poppet, logic element - vent-to-open
• DOJC Normally open, balanced poppet, logic element - pilot-to-close
• DOJD Normally open, balanced poppet, logic element - vent-to-close
• FRFA Fixed-orifice, bypass/restrictive, priority, flow control valve
• LKJC Pilot-to-open, spring-biased closed, unbalanced poppet logic element
• LKJCZ Pilot-to-open, spring-biased closed, unbalanced poppet logic element with position switch
• LOJA Vent-to-open, spring-biased closed, unbalanced poppet logic element with pilot source from port 1
• LOJA8 Vent-to-open, spring-biased closed, unbalanced poppet logic element with pilot source from port 1 and integral T-8A control cavity
• LOJB Vent-to-open, spring-biased closed, unbalanced poppet logic element with pilot source from port 2
• LOJB8 Vent-to-open, spring-biased closed, unbalanced poppet logic element with pilot source from port 2 and integral T-8A control cavity
• LOJC Pilot-to-close, spring-biased closed, unbalanced poppet logic element
• LOJCZ Pilot-to-close, spring-biased closed, unbalanced poppet logic element with position switch
• LOJD Vent-to-open, spring-biased closed, unbalanced poppet logic element with pilot source from port 1 or 2
• LOJD8 Vent-to-open, spring-biased closed, unbalanced poppet logic element with pilot source from port 1 or 2 and integral T-8A control cavity
• LOJO Pilot-to-close, spring-biased open, unbalanced poppet logic element
• LOJOZ Pilot-to-close, spring-biased open, unbalanced poppet logic element with position switch
• LOKA Vent-to-open, spring-biased closed, unbalanced poppet logic element with pilot source from port 1
• LOKA8 Vent-to-open, spring-biased closed, unbalanced poppet logic element with pilot source from port 1 and integral T-8A control cavity
• LOKB Vent-to-open, spring-biased closed, unbalanced poppet logic element with pilot source from port 2
• LOKB8 Vent-to-open, spring-biased closed, unbalanced poppet logic element with pilot source from port 2 and integral T-8A control cavity
• LOKC Pilot-to-close, spring-biased closed, unbalanced poppet logic element
• LOKCZ Pilot-to-close, spring-biased closed, unbalanced poppet logic element with position switch
• LOKD Vent-to-open, spring-biased closed, unbalanced poppet logic element with pilot source from port 1 or 2
• LOKD8 Vent-to-open, spring-biased closed, unbalanced poppet logic element with pilot source from port 1 or 2 and integral T-8A control cavity
• LOKO Pilot-to-close, spring-biased open, unbalanced poppet logic element
• LOKOZ Pilot-to-close, spring-biased open, unbalanced poppet logic element with position switch
• LPJA Normally open, modulating element with pilot source from port 1
• LPJA8 Normally open, modulating element with integral T-8A control cavity and pilot source from port 1
• LPJC Normally open, modulating element
• LRJA Normally closed, modulating element with pilot source from port 1
• LRJC Normally closed, modulating element
• PBJB Pilot-operated, pressure reducing valve
• PBJB8 Pilot-operated, pressure reducing main stage with integral T-8A control cavity
• PBJC Air-controlled, pilot-operated, pressure reducing valve
• PBJF Pilot-operated, pressure reducing valve with drilled piston orifice
• PBJF8 Pilot-operated, pressure reducing main stage with drilled piston orifice and integral T-8A control cavity
• PPJB Pilot-operated, pressure reducing/relieving valve
• PPJB8 Pilot-operated, pressure reducing/relieving main stage with integral T-8A control cavity
• PPJC Air-controlled, pilot-operated, pressure reducing/relieving valve
• PPJF Pilot-operated, pressure reducing/relieving valve with drilled piston orifice
• PPJF8 Pilot-operated, pressure reducing/relieving main stage with drilled piston orifice and integral T-8A control cavity
• PRJB Direct-acting, pressure reducing/relieving valve
• PRJR Direct-acting, pressure reducing valve
• RSJC Pilot-operated, balanced piston sequence valve
• RSJC8 Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity
• RSJE Air-controlled, pilot-operated, balanced piston sequence valve
• RVIA Ventable, pilot-operated, balanced piston relief valve
• RVIB Normally closed modulating element valve with relief function
• SCIA Direct-acting sequence valve with reverse flow check
• SQJB Kick-down, pilot-operated, balanced piston sequence valve
• XJBA Port 1 to 3 open, port 2 blocked cavity plug
• XJCA All ports blocked cavity plug
• XJOA Port 1 to 2 open, port 3 blocked cavity plug
• XJOB All ports open cavity plug
• XJOC T-19A cavity to T-17A cavity converter

• 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.

• Sun's Floating Style Screw-In Cartridge (1.06 MB)
• Seals: Materials of Construction
• Seal Kit Installation Guidelines