First off thanks to All Hail the Black Market Blog for being smart enough to take a picture of these tubes of Blue Seal Sealant before he used them or gave them away – unlike me! ;) I received 2 tubes of the stuff for free from the distributor to review last year. Seeing as my tubeless setups were all okay using Stan’s I didn’t feel like reinstalling my tires just to test the sealant. So I gave 1 tube to Scott and 1 tube to Kurt. Both were installing ghetto tubeless setups on their bikes.
I spent a lot of time helping Kurt get his mountain bike setup tubeless. It was a pain at first, but that’s because he’s using rims and tires that were not designed for a tubeless application. We eventually got the tires to hold air reliably with Blue Seal. I don’t think that’s any fault of the sealant. It was simply a tough application.
Scott’s setup worked as far I know. He had one front wheel burp that was not possible to reseal on the trail, but he’s running a ghetto tubeless setup as well so I wouldn’t blame that on the sealant. It seemed as messy to deal with as Stan’s when we tried to re-seat the tire. Sealant is gooey by nature.
There were no punctures during the test period. Although Kurt found a decent sized hole [ie. large thorn] in one of his tires during setup. It took a little bit for the hole to seal 100%, but it’s fine now. I had a similar sized hole in one of my 29er tires and it took several tries with Stan’s to seal. I couldn’t convince Kurt or Scott to run over nails to test the sealing properties of this product further. ;)
Here’s the manufacturer’s spew:
“Finally and environmentally-sound, non toxic inner tube flat preventive. ALSO works with tubeless tires. It forms a seal using natural nano-fibers which harden up to form a plug when exposed to air. Doesn’t leave an oily or sticky mess like other sealant…you know what we mean if you’ve ever had to change a tube or tire that experience punctures with sealants. Applicator tube includes valve core removal tool.”
I have no way to evaluate the environmental claims of the product and we didn’t try putting any into tubes as a sealant.
Tire sealant like inner tubes is not a glory product. Unless it lets you down you really don’t notice it. Blue Seal worked fine with ghetto tubeless setups. If it was on the shelf at my LBS I’d be happy to use it.