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Casing End Seal System - SKPS

CASING END SEAL SYSTEM

The VISCOTAQ® Casing End Seal System is based upon the use of the VISCOTAQ® VISCOPASTE in combination with the  VISCOWRAP and the COMPOSITE WRAP. The system is applied to prevent water infiltration and corrosion where the carrier pipe enters the casing pipe. VISCOTAQ® remains in a semi-solid state, offers immediate adhesion without the need for primer, requires minimal surface preparation, and forms a homolog, continuous, waterproof seal. One of the unique characteristics of the application is that the carrier pipe does not need to be centered in the casing.

  • Carrier Pipe does not have to centered in casing pipe
  • Can be used on casings with multiple internal pipes
  • Inert material, no deterioration over time

STEP 01: SURFACE PREPARATION

  • Surface preparation on both the carrier and casing pipe should be a min of 10” in both directions.
  • It shall also be completed on the firs t 3” of the internal surface of the casing pipe and also on the carrier pipe.
  • Minimum surface preparation should be SSPC-SP2.
  • Clean surface with denatured alcohol or acetone to remove any remaining dust, grease and mois ture.

STEP 02: APPLY VISCOPASTE

  • For optimum application of VISCOPASTE, the material should have a temperature above 25° C/77° F.
  • Apply VISCOPASTE a minimum of 1 1⁄2”- 2” inside of casing between the casing and carrier pipe.
  • Taper VISCOPASTE at a 30° angle from the casing pipe to the carrier pipe.
  • VISCOPASTE should be packed into the casing void with as few air pockets as possible
casing end seal viscotaq

STEP 03: VISCOWRAP APPLICATION

  • Apply VISCOWRAP over casing end seal area starting on casing ≥10” from the casing end.
  • Apply VISCOWRAP with a 50% overlap from casing pipe to carrier pipe, wrap at an angle with slight tension to create a smooth overlap.
  • Continue wrapping on to carrier pipe distance of 10” or more from casing end.
  • VISCOWRAP should be gently smoothed by hand to ensure no wrinkles, folds, or entrapped air.

STEP 04: PU COMPOSITE WRAP APPLICATION

  • Apply the COMPOSITE WRAP with sufficient tension and a 50% overlap,continually apply water during application.
  • Apply COMPOSITE WRAP over the entire transition area from carrier pipe to casing pipe for mechanical protection.
  • Begin and terminate composite wrap ≥ 8 inches in both directions from casing end. Completely encapsulate VISCOWRAP with COMPOSITE WRAP.
  • Apply plastic Wrap (shrink-wrap) over entire area. Then lightly spray with water.
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