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Ox Tails Improves Your Favorite Tire Sealant with Carbon Fiber Additive to Plug Leaks

Written by Ron Frazelle
Black Ox Ox Tails Sealant Additive package(Photos/Black Ox Sealant)
16 Comments
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Black Ox is a newer sealant company that we touched on back in 2020. Their sealant uses micro-carbon fiber particles contained within the latex-based sealant. Today they are releasing their new carbon fiber additive, Ox Tails.

Black Ox uses a proprietary formulation that uses carbon fiber to enhance the effectiveness of their natural latex-based tire sealant. They say it creates a sealant that is “damn-near bulletproof”.

The new Ox Tails additive is a special blend of treated carbon fibers. These fibers provide “the ultimate in puncture protection.” The fiber length, tow size, and bonding are optimized to maintain discrete plugs. This will help plug the larger holes.

Black Ox Ox Tails Sealant Additive in action
(Photos/Black Ox Sealant)

The fibers that are in the Ox Tails Sealant Additive are the perfect complement to the micro-fiber particles contained in all of the Black Ox Sealant products. But, Black Ox also urges you to give the OX Tails a try and add them to your favorite sealant.

Ox Tail Sealant Additive Retail and Instructions

Retail: $8.95

You can not install Ox Tails through the valve stem. Install 1-2 grames before your next gnar-fest for that extra added protection. Each packet contains 20 grams of fiber. Black Ox says that should be good for a minimum of 10-wheel setups.

Check out everything Black Ox has to offer by hitting the link below.

BlackOxSealant.com

Ron Frazelle
Ron Frazelle
612 articles

Ron Frazelle is the Cycling Lifestyle Editor for Bikerumor, he has been writing about bicycles and the cycling way of life for 7+ years. Prior to Bikerumor, he worked in the bicycle industry, living and breathing bicycles since 1995. He is based in Anaheim, California, Frazelle is an avid cyclist of all disciplines, camper, father to 6 children, husband, musician and self-proclaimed retro-grouch.

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Fabricio
Fabricio
8 months ago

I can’t wait for the people complaining about this carbon fiber sealant leaking into the trails whyle they use ebikes with more polution transfered to the environment during the manufacture of their batteries. Zero hate but we need stop being naives.

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Philipp
Philipp
8 months ago
Reply to  Fabricio

The environmental cost of producing batteries is constantly and rapidly dropping future more the batteries have at least a theoretical chance of a second life for grid management or recycling for further use. I personally can’t stand ebikes in most cases. But yust because some things are bad doesn’t justify any other bad thing to be no problem anymore. Every little counts and I sure there’s plenty of alternativ additives that perform similarly but are biodegradable. I guess they just lack the marketing potential of a buzzword such as CARBON FIBER!

2
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Yeah sure
Yeah sure
8 months ago

Good product idea at a reasonable price. This wouldn’t fit my needs but adding a bigger coagulant should help quite a bit for larger holes in higher volume/low pressure tire applications.

0
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tom
tom
8 months ago

Pollution in a bag

0
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Buddy
Buddy
8 months ago
Reply to  tom

You throw away more in one plastic bottle than is used all year in sealant additive.

6
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tom
tom
8 months ago
Reply to  Buddy

It how its disposed of. Plastic bottles are easily recycled. Tiny fragments of carbon fiber are not.

0
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Marc Smith
Marc Smith
8 months ago
Reply to  tom

plastic bottles are NOT easily recycled. You may be right about carbon fiber but that statement is pure joke for just about 95% of the world.

4
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Jwp
Jwp
8 months ago
Reply to  Buddy

One bad doesn’t make another ‘bad’ OK. Now on top of you trowing away plastic bottles, you also polute the trails. I also think it isn’t very healthy for the wildlife.

1
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Ben
Ben
8 months ago

Silca already has this in their sealant. And it doesn’t work well in practice let alone the environmental impact.

3
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FritzP
FritzP
8 months ago
Reply to  Ben

Well, both Silca and BlackOx have carbon fiber in their sealant. Silca claims their CF additive is low density enough that it stays suspended in the fluid, not getting plastered to the tire. The mobility allows their fibers to contribute to sealing. Dunno about the BlackOk carbon fiber. Looks like much larger pieces. Maybe low density too? Not sure how it being CF helps w/ sealing. Like another comment points out, having stiff, pokey CF inside the tire won’t be friendly to a tube in the case one is needed.

1
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Ben
Ben
8 months ago
Reply to  FritzP

I can assure you that Silca’s claims are not accurate then. To be fair Josh is a master marketer. If you speak for 15-30 minutes about sealant (or degreasing a chain, wax, etc.) it must be true, right?
Muc Offs sealant is also garbage in the real world. I learned my lesson the hard way here. What works in a lab on a YouTube video isn’t representative of how it will perform in the real world when you need it to. It loses its viscosity way too fast to be of any use in practical applications.

1
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Klarf
Klarf
8 months ago 
What happens when you install an inner tube if the preventative no longer works?
The carbon looks like thorns stuck in the tire.
9
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Dann
Dann
8 months ago
Reply to  Klarf

This very thing happened to a racer in MN a few months back (I think he used a different, but similar, product). It took him close to an hour to clean his tire enough so that his tube wouldn’t get punctured.

0
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carbonfodder
carbonfodder
8 months ago

An old skool equivalent of this approach was to use glitter particles. Might not be any better for the environment, but wallet-hurt should be decreased.

1
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Greg
Greg
8 months ago
Reply to  carbonfodder

I’ve been waiting for this angle to surface. A few years back it was de rigeur to brew one’s own sealant and glitter was part of a lot of recipes. I’ve never been fully convinced that it had any real-world benefits

0
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Yeah sure
Yeah sure
8 months ago
Reply to  Greg

Pretty sure orange seal has glitter in it. I think they call it something else but it’s basically just glitter. I think the coagulation with glitter and in this case chunks of carbon tow would be better would allow you to run a more viscous sealant which can coat the tire and fill the high pressure small punctures better but still clot the bigger holes and allow the sealants to work a bit better.

0
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