SylWrap HD is a composite pipe repair bandage with a water activated resin which sets rock hard in minutes to protect pipes and structures

SylWrap HD Pipe Repair Bandage

The fast-working resin infused in SylWrap HD allows rapid repair of pipes and structures made from steel, stainless steel, iron, copper, PVC, GRP, clay, ceramic, concrete, lead and rubber. It can be applied around difficult elbow joints, tee joints and welds.

Applying SylWrap HD to pipelines improves pressure resistance, chemical resistance and hoop strength. Where a pipe has been weakened or damaged, SylWrap HD increases outer wall thickness to return the line to original specification.

It also reinforces repairs made with other Sylmasta leak repair products. Wrapping SylWrap HD over a sealing material such as Superfast Epoxy Putty or Wrap & Seal Pipe Burst Tape provides an additional layer over the initial sealant, offering a permanent solution.

SylWrap HD is temperature resistant to 250°C and has WRAS approval for use with drinking water. Water companies in the UK use it for reinforcing repairs to leaking pipes and burst water mains.

The high chemical resistance of SylWrap HD enables it to repair hydrogen, sulphuric acid and other pipelines in petrochemical plants and oil refineries. Other uses include desalination plants, wastewater treatment works, district heating and nuclear power stations.


SylWrap HD Pipe Repair Bandage Details

SylWrap HD is easy-to-use. Dipping the bandage in water activates the resin. The bandage is then wrapped around the pipe or structure requiring strengthening.

Further water is added to smooth SylWrap HD down as application continues. SylWrap HD has a work time of 2-5 minutes. A functional cure is achieved in 30 minutes and a full cure with maximum properties in 24 hours.

11 different sizes of SylWrap HD are available, covering pipework in excess of 600mm diameter. To determine the size of SylWrap HD and quantity needed for a specific application, please use the Repair Calculator tab and enter your repair data.

SylWrap HD can also be purchased as part of the Universal Pipe Repair Kit for fixing live leaks. The Kit includes a single bandage along with two sealing materials and is suitable for repairing all types of pipes.

As well as SylWrap HD, Sylmasta manufacture a specialist composite wrap for protection against corrosion. SylWrap CR is infused with highly effective corrosion inhibitors for repair and reinforcement applications in aggressive environments, including marine.

Benefits of SylWrap HD Pipe Repair Bandage

  • Easy to use – simply activate with water and then wrap around the pipe or structure requiring repair
  • Cures quickly for a full strength repair inside 30 minutes
  • Refurbishment and strengthening of pipes offers a cheaper alternative to replacing systems
  • Increases pressure resistance, chemical resistance and hoop strength of pipes


  • Copper pipe repair, PVC plastic pipe repair, steel pipe repair, iron pipe repair, GRP pipe repair, ceramic pipe repair, concrete pipe repair, lead pipe repair, rubber pipe repair
  • Underwater repairs
  • WRAS approved for use on pipes carrying drinking water
  • Pipe repairs at wastewater treatment works, quarry wash plants, dry risers, petrochemical plants, nuclear power plants, oil rigs and breweries

Technical Data

Work Time2–5 minutes
Functional Cure30–45 minutes
Full Cure24 hours
Cured Material Life10–20 years
Max Service Temp120°C / 250°F

Product Codes

Please see Pipe Size Guide Tab for SylWrap HD Pipe Repair Bandage product codes

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Pipe Size Guide

SylWrap HD Pipe Repair Bandage Size Guide

SylWrap HD Pipe Repair Bandage is currently available in the following sizes recommended for use on the specified pipe diameters.

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Repair Calculator

SylWrap HD Pipe Repair Bandage Repair Calculator

The below SylWrap Coverage Calculator can be used to determine the optimum SylWrap HD repair for a pipe reinforcement or strenghthening application.

Enter the diameter of the pipe in millimetres, the length of the area to be wrapped in millimetres and the pressure which the pipeline operates under.

The safety factor is a multiple to include a margin of safety. For example, if pipe pressure is 5 bar and you want a safety factor of two, the calculator will formulate a repair capable of withstanding 10 bar.

Once you have entered your data, the calculator will show you the SylWrap Bandage which is recommended for your application, the required thickness of repair, the number of layers to reach the stated thickness and the quantity of bandages required.

If you wish to see the repair requirements for a specific bandage, the SylWrap size can be changed. The calculator will then determine the repair thickness, number of layers and quantity of bandage required.

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Case Studies

SylWrap HD Pipe Repair Bandage Case Studies

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SylWrap HD Pipe Repair Bandage Videos

SylWrap HD Pipe Repair Bandage application
The application of a SylWrap Pipe Repair Bandage to a pinhole leak which has already been sealed.

High pressure live leak repair on a steel pipe
SylWrap Bandage is used to overwrap a live leak repair made using Wrap & Seal Pipe Burst Tape, providing a protective layer to turn the repair into a permanent solution.

Live leak repair on a 6″ elbow joint
A pinhole live leak repair involving SylWrap HD carried out on a 6″ steel pipe elbow joint at a pumping station in Malaysia.

Live leak repair on a 95mm steel pipe
A test live leak repair carried out to a 95mm steel pipe at Sylmasta HQ in the UK.

Please use the form to enquire about the price and availability of
SylWrap HD Pipe Repair Bandage


Related Composite Repair Products

SylWrap CR is a composite wrap infused with corrosion inhibitors for use in aggressive environments

SylWrap CR Corrosion Protection Wrap

Pipe repair bandage infused with corrosion inhibitors to further protect pipes in harsh, aggressive environments including marine and underwater against substrate corrosion.

Number of Repairs: One Per Bandage
Work Time: 2–5 minutes
Temperature Resistance: Up to 250°C
Pressure Resistance: Up to 30bar

SylShield Pipe Weld & Protection Wrap

Three times the thickness of SylWrap. It is used to protect welds and pipelines which are subjected to intense installation processes or operate in highly abrasive environments.

Number of Repairs: One Per Bandage
Work Time: 2 – 5 minutes
Temperature Resistance: Up to 250°C
Pressure Resistance: Up to 30bar

E190 Epoxy Composite Repair Kit

Kit containing Sylmasta E190 Brushable Epoxy Resin and Fibreglass Tape, enabling more versatile patch repairs to complex sections of pipework or tanks where direct bandage wrapping is not possible.

Number of Repairs: Multiple
Work Time: 30 minutes
Specialist resins can be formulated for temperature, chemical resistance, etc.