PSI Model W Wrap-Around End Seals

Model “W” End Seals are designed for existing installations. A plastic backing is simply removed to expose the self-curing rubber on both ends of the end seal. Once the two are pressed together a solid bond is created between mating surfaces and carrier/casing pipes. Model “W” end seals are available for all carrier/casing differentials.

PSI Model W Wrap Around End Seals

Model W Description

Model W Wrap Around End Seals are designed to accommodate customer supplied specifications so they may be used for any size casing/carrier differential.

Model W Wrap Around End Seals are Manufactured from 1/8″ thick specially compounded synthetic rubber, PSI Model W 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 W 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.

Benefits and Features

  • Custom made to order.
  • Screwdriver is only tool required for installation.
  • Carrier pipe does not need to be centered inside casing.
  • Can be installed on existing casing installations.
  • Self-curing seam: simply remove plastic backing and press together.
  • Designed to last for the life of the piping system.
  • Heavy duty hose clamps provided.


Material Specifications

EPDM 60 Buna-N Neoprene
Material EPDM 60 Buna-N Neoprene
Thickness 1/8″ (3.18mm) 1/8″ (3.18mm) 1/8″ (3.18mm)
Color Black Black Black
Temperature 250°F (121°C) 212°F (100°C) 170°F (77°C)
Hardware 304 Stainless Steel Bands
w/Worm Screws
Sizing Per Customer’s Specifications
Standard casing end seals are designed for below ground use.
For above grade applications, please contact Allied Corrosion Industries, Inc.

Typical Application

PSI End Seal Model W Typical Application


  1. Prepare outside surfaces by removing dirt from Casing and carrier pipe.
  2. Wrap end seal around carrier pipe and casing pipe, make sure the widest portion of the end seal gets wrapped around the casing pipe.
  3. Overlap the edges of the end seal with the release papers facing toward each other.
  4. Remove release papers and firmly press together the entire seal area along the edge. Repeat the pressing process to make sure seam is tight.
  5. Position banding clamp approximately 1″ from the end of the casing pipe and then tighten onto the end seal.
  6. Fold end seal in an S shape so it will extend into the casing.
  7. Position banding clamp approximately 1″ from the end of the end seal on the carrier pipe and then tighten. (Make sure the end seal is folded into the casing, to relieve stress during backfilling and allow for expansion and contraction movement.)
  8. Repeat on other end of casing.


Manufacturer’s warranty statement will be supplied upon request to Allied Corrosion Industries, Inc.

How to Order

To order Model W End Seals, please indicate the following:

  1. Quantity
  2. Carrier Pipe O.D.
    (Type and coating thickness if applicable.)
  3. Casing Pipe O.D.
    (Type and coating thickness if applicable.)

Typical Specification

Model W Wrap Around 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. End Seals shall be PSI Model W Wrap Around as manufactured by Pipeline Seal and Insulator, Inc., Houston, TX. to ISO 9001:2000 standards. A copy of current ISO 9001:2000 registration shall be provided with material submittal.

PSI Model W Wrap-Around End Seals

PSI Model W Wrap-Around End Seals

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