SylWrap Pipe Repair Bandages are water-activated and set rock hard in minutes, helping to strengthen and repair damaged and leaking pipework

SylWrap HD Pipe Repair Bandage

SylWrap HD Pipe Repair Bandage is a water-activated composite wrap which strengthens and protects pipework, extending the lifespan of systems.

Applying SylWrap HD to a pipe increases pressure resistance, chemical resistance and hoop strength. A Pipe Repair Bandage will reinforce leak and damage repairs made using epoxy putties, pastes, coatings, or pipe repair tape by providing a rock-hard, impact resistant layer over initial sealant materials.

SylWrap HD is effective on pipes of all sizes made of steel, stainless steel, copper, malleable iron, GRP, ceramic, most plastics, clay, concrete, rubber, and lead. The fast-working resin infused in SylWrap HD means that the Bandage will begin to cure within minutes, allowing for rapid repairs to be made without the need for any formal training.

It is used in a wide range of industries. Desalination plants, wastewater treatment works, nuclear power plants and fire stations have all used SylWrap HD for pipeline reinforcement. The high chemical resistance of the Bandage enables it to repair hydrogen lines and sulphuric acid lines.

Water utilities companies in the United Kingdom keep SylWrap HD on their vans for reinforcing repairs to leaking pipes and burst water mains. SylWrap HD has WRAS Approval, meaning it is certified to British standards as safe to use on pipes carrying drinking water.

Sylmasta manufacture a specialist composite repair wrap for use in marine applications. SylWrap CR is infused with corrosion inhibitors to protect and strengthen metalwork against all forms of corrosion.

SylWrap Pipe Repair products are WRAS approved, one of the highest pipe repair accreditations that a product can achieve

How to strengthen and protect pipework with SylWrap HD

SylWrap HD is easy to use. Dipping the Bandage into water activates the resin. The Bandage is then wrapped around the pipework requiring strengthening or protection with further water used to smooth it down as the 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.


  • Steel pipe repair, 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 pipeline strengthening and refurbishment
  • Increasing pressure resistance, chemical resistance and hoop strength
  • Protection of structures other than pipes, such as machinery and piles


  • Easy to use – simply activate the Bandage using water and wrap
  • Applied in under 30 minutes
  • Refurbishment of pipes offers a cost-effective alternative to system replacement
  • WRAS approved so safe to use with drinking water

Technical Data

Working Time:
2 – 5 minutes, dependent upon size of SylWrap, temperature of water and pipework.

Functional Cure:
30 – 45 minutes.

Full Cure:
24 hours (maximum properties).

Cured Material Life:
10 – 20 years, dependent upon repair quality, repair thickness, condition of pipe, environmental conditions, pipe temperature, etc.

Shore D Hardness:

Tensile Strength:

Coefficient of Thermal Expansion:
7.1 x 10/ °C (SylWrap composite wrap)

Max Service Temperature:
250°C / 480°F. SylWrap has been used at 250°C with steam at 20 bar for a two week temporary repair and at 200°C at 20 bar for over six weeks. Lab tests show thermal stability up to 300°C.

Max Pressure Resistance:
30 bar (430 psi), depending on size of pipe and leak (hole requires epoxy filler first).

Chemical resistance: Acetone, ammonia, sulphuric acid (30%), ethyl alcohol, mineral spirits, gasoline, MEK, toluene, diesel, hydrochloric acid, Varsol, ethylene glycol, crude oil, hydraulic oil (test period of 40 days).

Full TDS Downloads

Case Studies

SylWrap HD Pipe Repair Bandage Case Studies

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Repair Calculator

SylWrap HD Pipe Repair Bandage Repair Calculator

The below calculator can be used to determine the optimum SylWrap HD application for your pipe repair.

Enter the diameter of the pipe to be repaired, the length of the damage area and the pressure resistance required.

The safety factor is a multiple to include a margin of safety. For example, if pipe pressure is 10 and you want a safety factor of two, then the calculator will formulate a repair capable of withstanding 20bar.

Once you have entered your data, the calculator will show the size of SylWrap HD, the quantity of bandages required, and the number of layers which should be wrapped.

Full TDS Downloads

Size Guide

SylWrap HD Pipe Repair Bandage Size Guide

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

Single SylWrap HD can also be purchased as part of the Universal Pipe Repair Kit which includes Superfast Steel Epoxy Putty and Wrap & Seal Pipe Burst Tape for fixing live leaks.

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


Related Products

SylWrap CR is a pipe repair wrap infused with special corrosion inhibitors to protect pipework and structures from corrosion

SylWrap CR Corrosion Protection Wrap

SylWrap CR is a 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 300°C
Pressure Resistance: Up to 50bar

SylShield Pipe Weld & Protection Wrap

SylShield is a 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

Sylmasta E190 Brushable Epoxy Resin

E190 is an epoxy resin coated onto surfaces and layered with Fibreglass Tape, building a composite repair. It is used when a repair wrap cannot be effectively applied, such as to complex pipes or tanks, and can be specially formulated for specific applications.

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