Model

990202014

Model: 990202014

Series 2 - T-2A cavity, EPDM, cartridge seal kit

Cavity: T-2A

Model

990202014

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.

  • EPDM seals have no limited shelf life.
  • EPDM seals are purple in color for easy stock and field identification.
  • Cavity
  • Series
  • Cartridge Thread
    1"-14 UNS
  • Valve Hex Size
    1 1/8 in.
  • Valve Installation Torque
    45 - 50 lbf ft
  • 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.
  • During 1985, SUN made a running change of all external seals on Series 2 cartridges (1-1/8 in. (28,6 mm) hex, 1-14 thd). The seals were changed from 3/32 in. (2,62 mm) c/s to 1/16 in (1,7/8 mm) c/s o-rings and backup rings.
  • Use the kit which contains the same size (c/s) seals as those used on the cartridge being repaired. Do not change cartridge o-ring c/s sizes.
  • Cartridges with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.

What models can this kit be used with?

  • CBEA 3:1 pilot ratio, standard capacity counterbalance valve
  • CBEB 1.5:1 pilot ratio, standard capacity counterbalance valve
  • CBEG 4.5:1 pilot ratio, standard capacity counterbalance valve
  • CKEB Pilot-to-open check valve with standard pilot
  • COFA Pilot-to-close check valve
  • FRDA Fixed-orifice, bypass/restrictive, priority, flow control valve
  • LKFC Pilot-to-open, spring-biased closed, unbalanced poppet logic element
  • LKFCZ Pilot-to-open, spring-biased closed, unbalanced poppet logic element with position switch
  • LOFD Vent-to-open, spring-biased closed, unbalanced poppet logic element with pilot source from port 1 or 2
  • LOFD8 Vent-to-open, spring-biased closed, unbalanced poppet logic element with pilot source from port 1 or 2 and integral T-8A control cavity
  • PBFB Pilot-operated, pressure reducing valve
  • PBFB8 Pilot-operated, pressure reducing main stage with integral T-8A control cavity
  • PBFF Pilot-operated, pressure reducing valve with drilled piston orifice
  • PBFF8 Pilot-operated, pressure reducing main stage with drilled piston orifice and integral T-8A control cavity
  • PPFB Pilot-operated, pressure reducing/relieving valve
  • PPFB8 Pilot-operated, pressure reducing/relieving main stage with integral T-8A control cavity
  • PRFR Direct-acting, pressure reducing valve
  • RSFC Pilot-operated, balanced piston sequence valve
  • RVEA Ventable, pilot-operated, balanced piston relief valve
  • Part
    Description
    Quantity
    View
  • 500-701-018
    O-Ring
    1
    C
  • 500-701-020
    O-Ring
    1
    B
  • 500-701-021
    O-Ring
    1
    A
  • 525-006-018
    Backup Ring
    2
    C
  • 525-006-020
    Backup Ring
    1
    B
  • 525-006-021
    Backup Ring
    1
    A