Our Products - Flange Connections

Inner Support Sleves

Custom Hydraulics manufactures Inner support sleeves for use with hose end fittings used on U.S. Naval and Government ships. An Inner support sleeve is designed to provide rigid support on hoses used with hydraulic fittings. This page provides detailed instructions for installation of CMC inner support sleeves.

Click To Download Inner Support Sleeves PDF


  1. Cut hose to desired length and remove any rubber dust.
  2. Measure both hose and nipple lengths and add 5/8 inch. Subtract the resultant length from the cut hose length. This equals the total length of support sleeves required.
  3. After determining the total length of sleeves required it may be necessary to cut one or two sleeves to create the exact length. Follow these guidelines if cutting is required.
    • Sleeves should contain no less than two (2) bronze rings.
    • Cut only between the ribs in the "stenciled" area.
    • Clean the rubber dust and particles from each support sleeve.
  4. Install the first hose fitting on one end of the hose.
  5. Install each sleeve into the hose. If three or more sleeves are required, install the shortest sections in the middle.
  6. To verify that all cuts and computations are correct, a tolerance check is recommended. This can be done by measuring the distance from the end of the inner support sleeve(s) to the end of the hose. This distance should equal the length of the (uninstalled) hose nipple plus 1/4" to plus 1".
  7. Install the second hose end fitting.

  1. Temperature range -40 F to +200 F
  2. For lengths less than "A":
    • Cut only in stenciled area between ribs.
    • Minimum usable length must include 2 bronze rings.
  3. Material: Nickel Alum. Bronze rings with Buna-N Bonding.
  4. Fits full I.D. Hose (tolerances equal to MIL-H-24136/1).

To learn more about Custom Hydraulic & Machine's Marine Hose End Fittings, call 253-854-4666, contact us or submit a request for information today.

Custom Hydraulic & Machine Qualifications

In everything that we do, Custom Hydraulic and Machine strives to consistently meet the highest standards our fighting men and women demand to accomplish their difficult missions. That’s why we're proud of our Quality Systems capabilities that include:

  • Quality systems: Mil 45208A and ISO 9001/2000 compliant
  • Engineering staff for consultation on design for cost-effective manufacturability
  • Navy Nuclear Tig welding
  • Pro Engineer solid modeling / Autocad
  • Hydrostatic testing to 10,000 PSI
  • Engineering using Pro/E and CMM

Our Cage Code:

  • CAGE 53159