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Sylmasta SylWrap 866 HD Pipe Repair Bandage 200mm x 20.0m
Sylmasta SylWrap 866 HD is a water-activated fibreglass pipe repair bandage in a 200mm x 20.0m wrap for large-diameter reinforcement on approximately 300-600mm outside diameter lines. Dip to activate, wrap while soft, and the cured composite forms a rock-hard shell that boosts wall thickness, corrosion resistance, and hoop strength on steel, plastics, and other substrates.
- WRAS Approval lists SylWrap HD as suitable for pipes and fittings carrying drinking water.
- Underwater application supports marine, dockside, and submerged pipe reinforcement work.
- Max leak pressure resistance is 30 bar / 435 psi when the leak is sealed with epoxy filler first.
$380.98
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Sylmasta SylWrap 866 HD Pipe Repair Bandage - 200mm x 20.0m
Sylmasta SylWrap 866 HD Pipe Repair Bandage is a water-activated composite fibreglass wrap supplied as a 200mm x 20.0m bandage for large-diameter reinforcement on pipes of approximately 300-600mm outside diameter. It forms a chemically inert protective shell for plant, marine, and process pipework, and WRAS listing supports drinking-water fittings.
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Key Features
- SYL866HD 200mm x 20.0m wrap is sized for approximately 300-600mm 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 pipe reinforcement jobs is Sylmasta SylWrap HD built for?
Sylmasta SylWrap HD is a composite fibreglass wrap with a water-activated resin for reinforcing and refurbishing damaged or worn pipes that have fallen below specification. Typical work includes strengthening older water and wastewater lines, reinforcing sealed leak repairs, protecting pipes in abrasive plant environments, and marine fuel, water, and waste pipe wraps. Once cured, it forms an impact-resistant protective shell that increases wall thickness, pressure resistance, corrosion resistance, chemical resistance, and hoop strength.
How do I activate and apply Sylmasta SylWrap HD, and how fast does it cure?
Dip the wrap in water to activate the resin, then wrap it around 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.
When should I choose the SylWrap 866 HD 200mm x 20.0m bandage (SYL866HD)?
Choose Sylmasta SylWrap 866 HD (SYL866HD) when you need a wide 200mm x 20.0m wrap for pipes of approximately 300-600mm outside diameter. Step down to 150mm sisters for 100-300mm OD, or up only if the line exceeds 600mm OD (larger factory sizes exist outside this Indcon live set). Confirm OD against the SylWrap HD TDS size table before specifying.
Is Sylmasta SylWrap HD approved for drinking-water pipe repairs?
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.
What pressure and temperature can cured SylWrap HD handle?
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.
Which substrates does SylWrap HD bond to, and can it be used underwater?
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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