Covalence WPCT Heat Shrink Sleeve

Covalence WPCT Shrink Sleeves from Protection Engineering for Corrosion Protection.


WPCT is a two-layer field-joint coating system for corrosion protection of pipelines operating at ambient temperature.

Covalence® WPCT is a wraparound heatshrinkable, ready-to-fit assembly for the corrosion protection of field girth weld joints in distribution and transmission systems. WPCT is compatible with standard pipe coatings. WPCT can also be used for coating bare, replacement pipe sections and large radius bends. The system is designed to be applied with minimum preheating and is ideal for large diameter water pipe.


Two-layer system

First layer: Visco-elastic low preheat sealant adhesive.

Second layer: Radiation-cross-linked, high density polyethylene with PCI (Permanent Change Indicator.


Dimpled backing provides a ‘permanent change’ indicator for

application of heat.

High impact and penetration resistance.

Available as all-in-one unit or roll form.

Low preheat sensitivity & proven functionality.

Sealing adhesive automatically flows and repairs minor mechanical


No special equipment or skills required.

Installation is carried out directly on the cleaned and dried (preheated) pipe surface without any primer being required. During installation, the heat-shrinkable sleeve is wrapped and shrunk to form a tight fit around the joint. During recovery, the adhesive softens and flows to form a perfect bond with the pipe surface providing protection against corrosion. The radiation cross-linked outer layer forms a tough barrier against mechanical damage and moisture transmission.

covalence heat shrinkable products shrink sleeves for pipeline covalence pipeline shrink sleeves
covalence wpct shrink sleeve on water pipeline

Covalence WPCT Shrink Sleeve

Two-layer construction complements a wide range of pipe coatings

Top quality hot-melt, copolymer coated sleeves resist soil stresses on all pipe diameters

Mastic-coated sleeves balance performance, economy and ease of installation

Self-healing adhesive flow automatically repairs minor mechanical damage

Dimpled backing providing a "permanent change" indicator for application of heat.

Technical Data & MSDS Covalence Page
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Protection Engineering

PO Box  8996

Pittsburg, CA 94565

Tel: 925.427.6200 or 801.785.1546


For information call: 800-878-8837

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