Sludge Puncture Sealant review

Effective puncture-stopper that can be used with any tube

Our rating 
4.0 out of 5 star rating 4.0
GBP £8.00 RRP
Sludge Puncture Sealant

Our review

Lets you avoid punctures while keeping your wheel weight low
Skip to view product specifications

One of the best solutions  — pardon the pun — to the puncture problem is this liquid sealant from South Africa, called Sludge. 

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The manufacturer claims it’s the number one tyre sealant for all types of tyres on the African continent.

Uniquely, Sludge can be used to protect inner tubes that don’t have a removable valve core. Normally, any latex solution can be used only when the valve core has been removed from the tube — but most bog-standard tubes don’t have removable cores.

To use Sludge, simply undo the valve, snip a section off the spout of the applicator bottle (just enough to allow the spout to be screwed on to the thread of the valve stem — the valve cuts a thread into the soft plastic). Once attached, allow 50-60ml of liquid into the tube before removing the bottle. Sludge recommends adding a little Vaseline to the valve after application, but we didn’t bother because we did this ‘in the field’, as it were.

Then inflate the tyre and give it a spin to distribute the fluid evenly throughout the tube, thus sealing your flat and creating puncture-proof inner tubes.

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Of course, you can buy pre-filled tubes from firms such as Slime, but where Sludge has an advantage — especially for weight-conscious cross-country racers, lightweight commuters or roadies in training — is that it allows you to puncture-proof super-light tubes, instead of having to use the standard ones Slime offers.

Product Specifications

Product

Name Puncture Sealant
Brand Sludge