Model C Casing End Seal by GPT

Designed To Last for the Life of the Piping System


Model "C" Custom Pull-on End Seals are designed to accommodate custom carrier/casing diameter combinations. They are ordered to customer supplied specifications so they may be used for any size casing/carrier differential. Manufactured from 1/8" thick specially compounded synthetic rubber, PSI Model "C" end seals are extremely robust, resistant to wide variations in environmental conditions while eliminating the possibility of foreign material entering the opening between carrier and casing pipes. Included with Model "C" End Seals are two appropriately sized hose clamps which are used to secure the rubber material around both carrier and casing pipes. Installation is quick and easy with only a screw driver needed for tightening the hose clamps.


  • Custom Made to Order
  • Quick and Easy Installation
  • Carrier Pipe Does Not Need To Be Centered Within Casing
  • Screwdriver Is Only Tool Required for Installation
  • Designed To Last for the Life of the Piping System
  • Heavy Duty Hose Clamps Supplied

 Typical Specifications

Model C Pull-on end seals shall be custom made per application with a minimum 1/8" thick synthetic rubber. Banding clamps are to be 304 stainless steel with worm screws.

Installation Instructions for Model C End Seal

  1. Installation Techniques - Model “C” End Seals (For New Installations Only) Prior to installing the final carrier pipe section into casing, slide end seal loosely onto carrier pipe making sure large opening of end seal is facing toward casing pipe. Position end seal on carrier pipe so it will be near the casing opening after the insertion of the carrier pipe is complete.
  2. Prepare outside surfaces by removing dirt from casing and carrier pipes.
  3. After carrier pipe is completely inserted into casing and end seal is correctly positioned relative to both casing and carrier pipes, secure large end (casing end) with stainless steel hose/banding clamp. Hose/banding clamp should be positioned at least 1” (25.4cm) from the end of the casing pipe. Tighten screw with a standard screwdriver to secure end seal to casing pipe.
  4. Fold end seal into an “S” shape so it will protrude into the casing. This is done to relieve stress during backfilling and allow for expansion and contraction both during and after installation is complete. The small end of the end seal will slide toward the casing as the “S” is constructed.
  5. Position banding clamp approximately 1” from the small end of the end seal (on the carrier pipe) and tighten with a standard screwdriver to secure end seal to carrier pipe.