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

990119002 : Series 4 - T-19A cavity, Polyurethane 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.

  • 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.
Cartridge Installation Data [ + ]
Series 4
Installation Torque 350 - 375 lbf ft474 - 508 Nm
Cartridge Thread M48M48
Valve Hex Size 1 5/8 in.41,3 mm
Cavity T-19A
Used With [ + ]

What models can this kit be used with?

  • CAIA 3:1 pilot ratio, vented counterbalance valve - atmospherically referenced
  • CAIG 5:1 pilot ratio, vented counterbalance valve - atmospherically referenced
  • CAIK 1:1 pilot ratio, vented counterbalance valve - atmospherically referenced
  • CAIL 2:1 pilot ratio, vented counterbalance valve - atmospherically referenced
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.
Additional Resources [ + ]