Heat Shrink Wrap Around
Heat shrink wrap around cable joint sheath or cable jacket repair sleeves feature a high shrink ratio and a heavy inner wall lining of hot melt adhesive. Ideal for cable joint outer sheath cable jacket repair or for additional mechanical and moisture, water, chemical or UV protection for undamaged low voltage cables to 1kV. A supplied set of stainless steel fastener rails hold the heat shrink wrap in place prior to heating. All Radiform heat shrink wraps are 1m in length and are easily cut to size if required, at maximum shrink levels the length may change by up to 10%.
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Advanced Wrap-Around Engineering and Hermetic Adhesive Protection
Standard tubular heat shrink sleeves require an open cable end for installation, making them completely impractical for repairing mid-span damage on long cable runs or pre-terminated assemblies. Our high-performance wrap-around repair sleeves completely overcome this limitation by utilizing an open, flexible sheet design that wraps directly around the damaged area like a cuff. A supplied set of matching stainless steel fastener rails slides onto the integrated structural lips, locking the sleeve into a secure cylinder prior to heating. The interior wall features a heavy, thick layer of specialized hot-melt adhesive that liquefies under heat, flowing into the cable pits and curing into a permanent, unyielding, and completely waterproof seal that bonds directly to the original cable jacket, effectively eliminating the risk of sub-surface tracking faults.
Rigid Engineering Performance for Low-Voltage Infrastructure
Achieving total safety and legal compliance on busy commercial and utility sites requires components engineered to strict industrial performance benchmarks. The Radiform wrap-around sleeve family features a high shrink ratio and is fully rated for low-voltage (LV) power applications up to 1kV, making it ideal for outer sheath cable joint reconstruction or for providing additional mechanical and environmental protection to undamaged cables. This advanced chemical formulation ensures the sleeve remains highly resistant to aggressive industrial chemicals, moisture ingress, and atmospheric oxidation, while its advanced UV stabilization prevents degradation under continuous outdoor sun exposure. Supplied in versatile 1-metre trade lengths that are easily cut to size with workshop shears, this rugged material behaves predictably during installation, though operators should note that the physical length may change by up to 10% at maximum shrink levels. The outstanding dielectric properties and physical resilience of the Radiform repair range make it the industry-standard specification across multiple high-exposure sectors. It is heavily utilized across the mining, heavy transport, and civil utility sectors to fix gouged, chafed, or cut insulation on heavy machinery trailing cables, underground distribution mains, and marine bulkheads where direct moisture pressures would destroy generic components. Furthermore, electrical contractors and asset inspectors depend on these metal-rail reinforced wrap sleeves to deliver rapid, permanent strain relief and environmental defence over exposed line joins, preventing unexpected operational downtime and saving thousands of dollars in full cable replacement costs.
Frequently Asked Questions
How do you install a wrap-around heat shrink repair sleeve on a continuous cable?
To execute a professional mid-span repair, you simply wrap the open flexible sleeve directly around the damaged section of the cable jacket. Next, you align the raised tracks on the outer edges and slide the supplied stainless steel channel rail over them to lock the sleeve into a unified cylinder before applying heat with a high-output workshop heat torch from the center outward to activate the internal adhesive.
What is the purpose of the heavy internal hot-melt adhesive lining?
The thick internal wall of hot-melt adhesive is explicitly designed to melt and flow under intense heat, completely encapsulating the damaged cable jacket or inline joint. As the sleeve contracts, it forces the liquified sealant into all voids and crevices, curing into a rugged, hermetic barrier that completely blocks out water, fine dust, corrosive acids, and ambient moisture.
Can these wrap-around sleeves be cut to shorter lengths for smaller repairs?
Yes, all of our Radiform wrap-around repair sleeves are supplied online in convenient 1-metre lengths that can be easily cut down to your exact project dimensions using heavy-duty workshop shears or a utility knife. When trimming the sleeve to a custom size, simply use a standard pair of tin snips to cut the matching stainless steel fastener rail to an identical length before assembly.
Why does the text mention a ten percent length change at maximum shrink levels?
When any heavy-duty cross-linked polyolefin material undergoes maximum thermal recovery, the polymer chains contract slightly along the longitudinal axis as they tighten. This standard material behavior means the finished length of your repair sleeve may reduce by up to 10% when fully shrunk down onto a very slim cable, so we always recommend cutting your sleeve slightly longer than the targeted damage zone to guarantee complete coverage.
Wrap around sleeves for power cable to 1kV, RF and data cable joints, also good for conduit repairs.
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