Visco Fuse (5 Metres) by Klasek

Tested Burn Rate: 1 Inch Every 2.5 Seconds

High-quality visco fuse designed for safe, reliable ignition of fireworks. With a 2mm thickness and 5-metre length, this green fuse burns at a consistent, predictable rate, making it a reliable choice for professional-style firework displays and multi-firework setups.

Why You’ll Love It

• Consistent, tested burn rate for predictable timing
• 5-metre roll — enough for multiple connections across a display
• Genuine Klasek visco fuse

Burn Rate

In our own burn testing, an 18-inch length of this fuse burned for 45 seconds, giving a burn rate of approximately:

• 1 inch ≈ 2.5 seconds
• 2 inches ≈ 5 seconds
• Roughly 1 metre ≈ 98 seconds (around 1 minute 38 seconds)
• A full 5m roll ≈ 8 minutes 12 seconds of burn time, if run end-to-end

These figures are based on our own controlled test and are intended as a general guide only. Burn rate can vary slightly between batches and with storage conditions (humidity in particular), so always test a small offcut under controlled conditions before timing a display, and never rely on estimated timings for safety-critical spacing.

Frequently Asked Questions

How fast does visco fuse burn?
In our own testing, this fuse burned at approximately 1 inch per 2.5 seconds (around 2 inches every 5 seconds), which works out to roughly 98 seconds per metre. Actual burn rate can vary slightly with storage conditions, so always test a small length first.

How long would a full 5-metre roll take to burn?
Based on our tested burn rate, a full 5-metre length would burn for approximately 8 minutes 12 seconds if run continuously end-to-end.

Can I order visco fuse on its own?
No. Fuse is only shipped alongside a fireworks order with a minimum spend of £100. Orders placed for fuse alone will be cancelled and refunded.

Is visco fuse safe to use at home?
Visco fuse should only be used by those with the appropriate experience and knowledge of firework safety, in line with UK firework regulations and manufacturer instructions.