Casing end seals

End Seals - Casing Flex End boot protection.






WA-Casing x Pipe end seals are molded to fit all American and International pipe diameters.

Boot Elastomer - EDPM , NBR, Silicone - rubber selection depends on the application, EDPM for most waterworks, NBR for oil and gas applications or silicone for high temperature applications.

Molded boot end seals may be closed or open. They protect the annular space from debris and allow flex between carrier pipe and casing.

Open end seals wrap around an existing casing and carrier pipe.

New installation pipe/casing use closed boots. Both types are fastened with stainless band straps.

To install a closed end seal it is slipped over the carrier pipe before the tie-band with the casing pipe is made. No special tools are required for installation.

For high pressing water head applications: a WA-disc seal, WA-modular seal or a Mastic seal provide waterproof sealing.

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End seals - Large pipe diameter to small pipe diameter.

WA-R-Boot - three axis end seal: deflection lateral, vertical and axial.



For very large casing pipe to smaller carrier pipes.

WA-R boots provide flexibility between large casing and small carrier pipe OD.


Elastomer may be EDPM or NBR. SS connector sleeves provide the necessary step down capability between pipe sizes.

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End Seals flex rings for pipes with large axial movement

WA-MN end seals


WA-MN boot seals allow large thermal expansion and contraction movement most of the flex boot is contained inside the casing pipe.

Several arc folds allow pipe to casing movement as required for the application.


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End Seal boots WA "U" split or closed provide flexible end seal protection.

Stainless steel clamping bands fasten the rubber collars to the pipe and casing.


If mounting to a wall sleeve pipe extension, allow 4 inch (100mm) sleeve extension outside the wall for clamping the seals to the wall sleeve and pipe.

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End Seal boots WA-"N"end-seal-edpm-rubber-stainless-straps


End Seals WA-N protect pipe/casings up to 24 inch casing pipe closed version only.

The elastomer rubber materials are EDPM or NBR depending on application requirements. End seals come with stainless steel attachment clamp rings.


Seals stretch 7% for size fitting.

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Typical End Seal drawings

Related Products:

Go to steel casing spacer: or Multi Pipe casing spacer

End-Seals eccentric, split or non-split.

Eccentric pipe/casing WA-end seals.


End Seals protect the opening between the carrier pipe and the casing to prevent foreign material to enter. End seals help kept the space dry to assist with corrosion protection.

Custom split designs are available depending on whether it is a new installation or in conditions where pipe and casing already exist.

Split end seal boot - for existing pipe and casing

Extended wall sleeve stub to pipe - Boot wraps around extended wall sleeve stub and pipe.


Pipe to casing split boot seal.

Split boot closing strip joins the split boots.

Boots may be - EDPM, NBR or Silicone



WA-SBS boots provide above ground or underground protection. Split for existing pipes, or closed for slip-on type.

For applications where long wall sleeve are used through a concrete wall, one or several casing spacers may be used to support the carrier pipe and hold it in alignment.

Pipe sizes from 2" to 42" are available for a horizontal or vertical application.

See brief Video on Split boot installation.

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End Seal Wraps - corrugated pipe to concrete or PVC pipes.




End-seal protection bonding wraps provide protection when smaller pipes enter larger pipes.

WA-ES-Wrap with adhesive back coating and reinforcement straps protect the annular space against water infiltration.

WA-ES-Wrap will allow pipe to casing differentials up to 8 inches (200 mm).

Protective wraps are suitable for most pipe types.

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End Seals - Mechanical Multi carrier pipe sealing

WA-GPW MPC-end seals are custom designed end seals for multiple pipes through th same casing. Multi pipe end seals match the axial entry and exit orientation of the pipes.

Seal material 304L stainless compression plates with EDPM or NBR rubber seal elements.

Orientation sealing pods are match fitted to pipe requirements.

See: Multi pipe steel casing spacers at:

Additionally see non-metallic - multi pipe casing spacers

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End Seals Mastic pipe closure seals

WA-Mastic end seal.

WA-Mastic-end seals: seal casing ends with a mastic compound that is always in a pliable state.

Mastic end seal compound is used in conjunction with end seal boots. 



Synthetic mastic end seal technology fills the annular space and prevents water infiltration into the annular space. It has exceptional anti-corrosive  and sealing properties. The mastic seal is non hazardous and environmentally safe.

Never hardens over its operational temperature range. 

  • Physical and operating properties
  • Application temperature +100C ~ + 350C
  • Density 1.35÷1.45 kg/dm3
  • Electrical contact resistance >3.9 × 10 8 Ωm
  • Water absorption < 0.0665 %mass
  • Cathodic disbondment in electrolytic media 0 mm
  • Salt Test Spray positive
  • Adhesion to steel and plastic
  • Cohesive fracture (tearing in the layer)
  • Based on testing at Oil and Gas Institute (INiG).


Synthetic product exceptional sealing properties.
Easy to place - never hardens.
Exceptional adhesion to steel and plastics.
Does not contain components hazardous to health and the environment.
Compatible to use with all products of anti-corrosion protection.
Stable properties upon operation over many years.
Tightly fills the space between the pipes, preventing water, oxygen and moisture from accessing the pipes.

See brief cut sheet

Request email quote or call Westatlantic 1-902 455-4455



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End seals, axial pipe movement, casing carrier pipe end seals, USA and Canada: USA: Texas, TX, Houston, New York, NY, Illinois, IL, North Dakota, ND, Iowa, IA, Ohio, OH, Michigan, New York, NY, Utah, Arkansas, Kentucky, KC, California, CA, Colorado, Denver, Louisiana, LA, Florida, FL., Pennsylvania, PA. Wisconsin, WI. Canada, Ontario, Oakville, Toronto, Mississauga. Alberta, AB; Edmonton, Calgary. British Colombia, BC; Vancouver, Saskatchewan, SK; Saskatoon, Manitoba MB; Winnipeg, Quebec, QC; Montreal, Quebec City, New Brunswick, NS, newfoundland.