Sylmasta SylWrap HD Pipe Repair Bandage 75mm x 2.7m

Sylmasta SylWrap HD is a water-activated fibreglass pipe repair bandage in a 75mm x 2.7m wrap for reinforcing and overwrapping sealed leaks on approximately 25-50mm outside diameter pipe. Dip to activate, wrap while soft, and the cured composite forms an impact-resistant shell that raises pressure resistance and chemical resistance.

WRAS Approval lists SylWrap HD as suitable for pipes and fittings carrying drinking water.
Bonds to steel, copper, iron, GRP, ceramics, clay, most plastics, concrete, and rubber.
Max leak pressure resistance is 30 bar / 435 psi when the leak is sealed with epoxy filler first.

$74.55

Availability: In stock ( 5 Available )

Details

Sylmasta SylWrap HD Pipe Repair Bandage - 75mm x 2.7m

Sylmasta SylWrap HD Pipe Repair Bandage is a water-activated composite fibreglass wrap supplied as a 75mm x 2.7m bandage for reinforcing pipes of approximately 25-50mm outside diameter. It cures into an impact-resistant shell that raises wall thickness and hoop strength on metal and plastic lines, and WRAS listing supports drinking-water pipe repairs.

Looking for another size?

50mm x 1.8m
SYL206HD 100mm x 3.6m
SYL412HD 150mm x 5.0m
SYL616HD 150mm x 10.0m
SYL633HD 200mm x 20.0m
SYL866HD

Key Features

SYL309HD 75mm x 2.7m wrap is sized for approximately 25-50mm outside diameter pipe per the SylWrap HD TDS.
Water-activated resin gives a 2 to 5 minute work window and a functional cure in 30 to 45 minutes.
Cured wrap forms an impact-resistant, chemically inert shell that raises wall thickness and hoop strength.
WRAS Approval lists SylWrap HD as suitable for pipes and fittings carrying drinking water.
Leak pressure resistance reaches 30 bar / 435 psi when the hole is sealed with epoxy filler first.
Applies to steel, copper, malleable iron, GRP, ceramic, clay, most plastics, concrete, and rubber.
Can be used underwater and in high-temperature service up to 250°C for temporary steam and process wraps.

Technical Specifications

Property	Value
Working time	2–5 minutes (temperature dependent)
Initial cure	7–10 minutes
Functional cure	30–45 minutes
Full cure (maximum properties)	24 hours
Shore D hardness	70
Tensile strength	250 MPa
Max service temperature	250°C / 480°F
Max leak pressure resistance	30 bar / 435 psi (seal hole with epoxy filler first)
Coefficient of thermal expansion	7.1 × 10⁻⁵ / °C
Shelf life (unopened foil pouch)	24 months from manufacture

Product documents: Sylmasta SylWrap HD Pipe Repair Bandage Technical Data Sheet

Frequently Asked Questions

What is Sylmasta SylWrap HD and how does it strengthen pipe?
Sylmasta SylWrap HD is a composite fibreglass wrap with a water-activated resin that sets rock hard in minutes to reinforce and refurbish damaged or worn pipes that have fallen below specification. Typical uses include strengthening older water and wastewater lines, reinforcing sealed leak repairs, protecting pipe in abrasive plant environments, and marine fuel, water, and waste wraps. Once cured, it forms an impact-resistant protective shell that increases wall thickness, pressure resistance, corrosion resistance, chemical resistance, and hoop strength.

Which outside diameters does the SylWrap HD 75mm x 2.7m bandage (SYL309HD) cover?
Sylmasta SylWrap HD (SYL309HD) is the 75mm x 2.7m wrap mapped to approximately 25-50mm outside diameter on the SylWrap HD TDS size chart. Step down to the 50mm x 1.8m sister (SYL206HD) for 15-25mm OD, or up to the 100mm x 3.6m wrap (SYL412HD) for 50-100mm OD. Confirm OD against the TDS size table before wrapping.

How fast does SylWrap HD set after water activation?
Dip Sylmasta SylWrap HD in water to activate the resin, then wrap the pipe or structure while the bandage is still workable. Working time is 2 to 5 minutes depending on temperature, initial cure is 7 to 10 minutes, functional cure is 30 to 45 minutes, and full cure with maximum properties is 24 hours. Keep the foil pouch sealed until use; piercing the pouch can cause premature cure.

Does Sylmasta SylWrap HD carry WRAS Approval for drinking water?
Yes. SylWrap HD carries WRAS Approval, so it is listed as suitable for pipes and fittings carrying drinking water. That supports potable-line reinforcement and overwraps where a WRAS-listed material is required. Always follow site hygiene rules and confirm the finished repair meets the local water-system specification before returning the line to service.

How do I reach the 30 bar / 435 psi leak pressure figure on SylWrap HD?
The TDS lists maximum leak pressure resistance of 30 bar / 435 psi depending on pipe and leak size; the hole must be sealed with epoxy filler first to reach that maximum. Maximum service temperature is 250°C / 480°F, with field notes for temporary steam service at 20 bar and lab thermal stability up to 300°C. For designed pipe reinforcement, pressure resistance can follow ASME PCC-2 guidance with Sylmasta engineering input.

What materials and environments can SylWrap HD wrap on?
SylWrap HD can be applied to steel, copper, malleable iron, GRP, ceramic, clay, most plastics, concrete, rubber, and other materials. It can be used underwater for marine and submerged repairs. Where a leaking pipe has already been sealed, overwrapping the sealant with SylWrap HD reinforces the initial repair with a rock-hard composite shell.

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