Techflex Weld Wrap HD Silica Sleeve, Hook-and-Loop, 1” x 25 ft, Silver
Quick Overview
- Techflex Weld Wrap HD, 1" x 25 ft roll
- Silicone-coated silica braid with heavy-duty hook-and-loop
- 500 degrees F continuous; 2,000 degrees F intermittent
- Wraps over welding leads and hoses already in service
- Protects against spatter, slag and sparks; cuts with shears
Show More
Item #: 299-WWH1.00SV
$182.50
per 25 Feet (USD)
In Stock & Ready to Ship
Techflex Weld Wrap HD, Silica Braid, Hook-and-Loop Closure, 1" x 25 ft Roll
Silicone-coated braided silica that wraps around welding leads, gas hoses and cables and closes with heavy-duty hook-and-loop: stands up to spatter, slag and sparks.
Techflex Weld Wrap HD is braided from silica yarn with a silicone coating and a heavy-duty hook-and-loop closure. Racetronix is a Techflex distributor. It replaces the original fiberglass Weld Wrap. Because it wraps on, it goes over welding leads, torch hoses and cables already in service, protecting them from molten spatter, hot slag, sparks and the wear of being dragged around the shop. This is the 1" size, sold as a 25 ft roll.
Key features
- Silica braid with a silicone coating.
- 500°F (260°C) continuous; intermittent exposure to 2,000°F (1,093°C).
- Heavy-duty hook-and-loop: wraps over existing leads and hoses.
- Non-flammable; high abrasion and penetration resistance; resists most chemicals.
- Cuts with scissors or shears. 25 ft roll.
Weld Wrap HD chart: sizes we stock
| Part | Size | Size (mm) | Wall | Weight per 25 ft roll |
|---|---|---|---|---|
| 299-WWH1.00SV | 1" | 25.4 | 0.051" | 3.29 lb |
| 299-WWH1.50SV | 1-1/2" | 38.1 | 0.051" | 4.24 lb |
| 299-WWH2.00SV | 2" | 50.8 | 0.051" | 5.20 lb |
Choose the size equal to or just larger than the outside of the lead or hose bundle. All sizes are silver, 25 ft rolls.
Specifications
| Construction | Silicone-coated braided silica, hook-and-loop closure |
| Size | 1" (25.4 mm) |
| Wall | 0.051" (1.3 mm) |
| Temperature | 500°F (260°C) continuous; 2,000°F (1,093°C) intermittent; minimum -65°F (-54°C) |
| Flammability | Non-flammable |
| Abrasion | High (maker's test) |
| Cutting | Scissors or shears |
| Sold as | 25 ft roll, silver |
Fitting Weld Wrap HD
- Cut the length you need with scissors or shears.
- Lay it around the lead or hose bundle and press the hook-and-loop closed along its length.
- Butt or slightly overlap pieces where you join them.
- Keep the closure on the side away from the work where you can.
Which heat protection do I need?
Heat reaches a hose or wire in three ways, and each needs a different kind of protection.
- Radiant heat. A header or turbo throws heat out in every direction, like a stove element, and it reaches anything in line of sight. Reflective foil stops it best: the aluminized face bounces it back before it gets in.
- Heat soak. Hot air and nearby hot parts warm a line slowly and steadily. Insulation stops it. Braided fiberglass traps thousands of tiny pockets of still air, the same way the insulation in a house wall does, and still air carries heat very poorly. Squash the fiberglass and the air goes, and most of the insulation with it.
- Flame, sparks and splash. A burst line, a backfire or weld spatter. This needs a covering that will not burn: a silicone jacket or a non-flammable fibre.
Foil-over-fiberglass products combine the first two: the foil reflects, the fiberglass insulates. Nothing should rest against a bare header; wrap the header, shield the line, or both.
| Situation | Use | Why it works |
|---|---|---|
| The exhaust itself: headers, down pipes, turbo crossovers | Header wrap | Keeps the heat inside the pipe, so far less of it radiates onto the hoses, wiring and bodywork around it. The best fix is usually at the source. |
| A hose or harness close to a header or turbo (strong radiant heat) | T6 ThermaShield split tube or ThermaShield Convoluted | The aluminized face reflects most of the radiant heat before it gets in, and the fiberglass behind it insulates against what does get through. |
| A firewall, floor pan, fuel cell or ECU box facing the exhaust | ThermaShield Flat or ThermaShield Wrap | The same foil over fiberglass, as a sheet that sticks on or wraps around odd shapes. |
| Lines in a hot engine bay: steady heat soak, little direct radiant heat | FireFlex fire sleeve | A thick layer of fiberglass holds still air, which insulates; the silicone jacket seals out oil, fuel and splash. Leave at least 1/8" of air gap so the fiberglass is never squashed. |
| Single wires, sensor and thermocouple leads near heat | Insultherm Tru-Fit fiberglass sleeving | A thin fiberglass braid that insulates without adding bulk. |
| Plug wire boots close to the headers | Insultherm spark plug boot sleeves | Double-thick fiberglass where the boot sits closest to the pipe. |
| Flame, sparks, weld spatter or molten splash | Dragon Sleeve, or FireFlex if the line also needs insulating | Dragon fibre will not burn and shrugs off sparks, but its thin wall holds little air, so it does not insulate much. FireFlex resists splash and insulates. |
All the lines compared:
| Product | What it is | Heat it handles | Continuous rating | How it fits | Best for |
|---|---|---|---|---|---|
| Techflex FireFlex fire sleeve | Thick fiberglass braid with a silicone jacket | Direct heat, open flame, oil and fuel splash | 500°F (260°C) | Slides on before the hose ends go on | Fuel, oil, brake and clutch lines near headers or turbos |
| Techflex T6 ThermaShield split tube | Aluminized fiberglass tube, split, closes with an adhesive strip | Reflects radiant heat | 491°F (255°C) material; reflects radiant heat from a 1,400°F source at 3/8" | Wraps around: no need to remove fittings | Assembled hoses and harnesses near exhaust |
| Techflex ThermaShield Convoluted | Seamless aluminized fiberglass, flexible convoluted tube | Reflects radiant heat | Not published | Slides on | Hoses and wires that bend in several directions |
| Techflex ThermaShield Flat (full adhesive) | Flat aluminized fiberglass with a full adhesive back | Reflects radiant heat | Not published | Sticks to any clean surface | Firewalls, floor pans, fuel cells, ECU boxes |
| Techflex ThermaShield Wrap (adhesive edge) | Flat aluminized fiberglass joined along one edge by adhesive | Reflects radiant heat | Not published | Wraps around odd shapes | Connectors, sensors, short runs |
| Techflex Insultherm Tru-Fit fiberglass sleeving | Acrylic-treated braided fiberglass | Direct heat, no flame or fluid seal | 464°F (240°C) | Slides on | Individual wires, thermocouple and sensor leads |
| Techflex Insultherm spark plug boot sleeves | Double-thick fiberglass sleeves, 7-1/2" long | Direct heat at the header | 1,200°F | Slips over the boot | Plug wire boots close to headers |
| Techflex header wraps: Insultherm, Header Wrap SI, Volcano Wrap | Woven tape wrapped around the pipe | Keeps heat inside the exhaust | Fiberglass 1,200°F; silica 2,000°F; basalt 1,300°F | Wrapped with 1/4" overlap, tied at the ends | Headers, down pipes, turbo crossovers |
| Techflex Dragon Sleeve | Thin double-wall braid of non-flammable Dragon fibre | Flame, sparks, weld spatter, molten splash; not an insulator | None published; the fibre decomposes at 842°F (450°C) | Slides on; the braid expands | Lines and wires exposed to sparks or open flame |
| Techflex Weld Wrap HD | Silicone-coated silica braid with hook-and-loop closure | Weld spatter, slag, sparks; heat | 500°F (260°C) continuous; 2,000°F (1,093°C) intermittent | Wraps on with hook-and-loop | Welding leads and hoses; lines that see sparks |
Frequently asked questions
Can I use it in an engine bay?
It is made for welding leads and hoses. Its 500°F continuous rating makes it usable near heat, but for fuel and oil lines FireFlex is the better choice.
Does it go on without disconnecting the leads?
Yes. The hook-and-loop closure lets it wrap over leads and hoses that are already connected.
Ratings are the maker's published figures.
