Lifeline Tubeless Tyre Sealant is latex-based with DuPont Kevlar additives and one of the cheapest options among the best tubeless sealants. Boasting the ability to seal punctures up to 5mm, and our standard test replicating just that, does it perform as Lifeline claims?

Lifeline Tubeless Tyre Sealant – Technical details

The sealant solution has a viscosity (and particles) with many similarities to other popular options, such as Stans No Tubes. With a white, liquid consistency the solution contains DuPont Kevlar additives.

Lifeline sealant is available in four sizes ranging from an 80ml up to a 946ml bottle. Both smaller bottles feature a Presta valve removal tool and a nozzle size that is designed to fit directly onto the Presta valve. This is a nice touch for those who enjoy longer rides or bikepacking adventures.

Recommended quantities are 60-80ml for road wheels up to 38mm, and 100-150ml for wider mountain bike tyres, with 150ml being suggested for 4in fat-bike tyres. For the 650b x 47mm tyre, the sealant was poured directly into the carcass, and not through the Presta valve (80ml of sealant was used). No pressure guidelines are given but Lifeline does suggest it can be used for road and mountain bikes.

Lifeline Tubeless Tyre Sealant – Performance

To test sealant performance, we created a standardised puncture test to assess each contender.

The same tyre on the same rim for each sealant. The tyre used was a Halo GXC, measuring 47mm. Tyre sealant was added in the amount suggested by the manufacturer, and the tyre was inflated to 40psi. This pressure was chosen to give a realistic tyre pressure for all areas of off-road riding. A digital tyre pressure gauge was used to ensure that the pressure was identical on each test. After that, the tyre was rotated sufficiently to ensure that it was distributed evenly throughout the tyre.

The tyres were all punctured by driving a 3mm nail through the carcass. The wheel was rotated to assess if the sealant had successfully sealed the hole. If the sealant worked, the test was repeated using a 5mm diameter nail, and if successful on the larger hole the remaining air pressure was measured with a digital pressure gauge and the result was recorded.

Lifeline_Tubeless_Sealant_Inside1.jpg
Lifeline_Tubeless_Sealant_Inside1 (Image Credit: Matt Page)
Lifeline_Tubeless_Sealant_Inside1.jpg, by Matt Page

Lifeline sealant had an average performance during the puncture tests with success in sealing the smaller 3mm sized puncture, but a significant amount of spray and air was lost on the larger puncture, with 34psi of air pressure remaining.

The sealant remained liquid for several months with no patches or dried spots, and the particles within the sealant were still visible and well separated.

Lifeline_Tubeless_Sealant_Particles.jpg
Lifeline_Tubeless_Sealant_Particles (Image Credit: Matt Page)
Lifeline_Tubeless_Sealant_Particles.jpg, by Matt Page

Lifeline Tubeless Tyre Sealant – Verdict

Lifeline Tubeless Tyre Sealant is available in four options: 80ml to 946ml, which is a decent spread. All bottle sizes offer good value compared to other brands, with the 80ml retailing for £5, 150ml for £10, 500ml for £15 and the largest 956ml at £23. Only the e*thirteen tire plasma tubeless sealant comes in cheaper with the largest 1-litre bottle costing £18.

While Lifeline sealant offers good value, the puncture protection performance is average when matched against the other sealants we tested. With the best-performing options coming in the form of the £25 WTB TCS and £30 Peaty’s Holeshot, the extra money these options fetch is a worthwhile investment in our opinion.

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Test report Lifeline Tubeless Tyre Sealant review £23.00

Accessories – misc

Product purpose: 

Lifeline says:

Fast, effective and mess-free sealant for tubeless tyre setups. LifeLine Tubeless Tyre Sealant is delivered through the valve to eliminate spills. The Dupont kevlar additive rapidly seals punctures and tears up to 5mm.
Tubeless tyre systems are lighter than inner tube setups, they seal punctures instantly and allow you to run lower pressures without the risk of pinch-flat punctures; so you can ride faster for and spend less time fixing punctures at the side of the roads and trails.
Quick, Easy and Mess-Free
LifeLine Tubeless Tyre Sealant makes installing tubeless tyres quick, easy and mess-free. The 80ml and 150ml applicator packs are supplied with built-in Presta valve core extractors and specially shaped nozzles to deliver the sealant directly through the valve, eliminating messy spills. No scoops or syringes required. The formula is non-toxic, it includes Dupont kevlar additive to rapidly seal punctures and tears up to 5mm. It is compatible with all tubeless tyre systems.

Build extra: 

Lifeline lists:

• Applicator bottle is reusable and includes built-in Presta Valve removal tool (80ml and 150ml bottle)
• Clear measuring window
• Mess free application
• Seals punctures up to 5mm
• DuPont Kevlar additive
• Non-toxic and non-staining
• Extended one year shelf-life
• Application instructions on sealant bottle
• Recommended Amount: 1″/25mm to 1.5″/38mm width: 60-80ml; 2″ to 4″ width: 100-150ml

Product construction 


Product performance 


Product performance extra: 

While the sealant did seal the 5mm puncture, there was a significant amount of spray and air released.

Product durability 


Product durability extra: 

It was still completely liquid, with no signs of drying out after several months of use.

product value 


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Overall performance: 

Lifeline Tubeless sealant hit its claims, and sealed the 5mm hole during our puncture test, but it only managed this with significant air loss and spray released.

Product likes: 

Long-lasting and cheaper than almost all other options

Product dislikes: 

Average sealing performance

Enjoy: 

No

Buy: 

No

Recommend: 

No

Conclusion: 

Lifeline Tubeless Tyre Sealant is one of the cheapest sealants available, with the largest 946ml priced at £23 and smaller options from just £5. It also appears to last a long time inside the tyre, and the particles did not coagulate into clumps. Despite the value and longevity, it was only average when sealing punctures and this is likely to be the main priority for almost all riders.
and the value doesn’t give it enough to match the best available.