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

990219006 : Series 4 - T-19A cavity, Viton, 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 twenty years from date of purchase. This date will be printed on the kit packaging.
Cartridge Installation Data [ + ]
Series 4
Cartridge Thread M48M48
Valve Hex Size 1 5/8 in.41,3 mm
Valve Installation Torque 350 - 375 lbf ft474 - 508 Nm
Cavity T-19A
Used With [ + ]

What models can this kit be used with?

  • RSJS Pilot-operated, balanced poppet sequence valve
  • RSJS8 Pilot-operated, balanced poppet sequence main stage with integral T-8A control cavity
  • RVIS Ventable, pilot-operated, balanced poppet relief valve
  • RVIT Anti-Shock, ventable, pilot-operated, balanced poppet relief valve
  • SDJT Anti-Shock, pilot-operated, balanced poppet sequence valve with drain to port 3
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.
  • After installing the GLYD® Ring, size it to restore original shape and to prevent damage during cartridge installation.
  • GLYD® Ring is a registered trademark of W. S. Shamban and Co., Los Angeles, CA, USA
Additional Resources [ + ]