To me, this is exactly how sealant should work. I wanted a product that I put in my tire every few months, and I don't have to think about it beyond making sure my tire pressure is good before a ride. This sealant takes worry out of your head and lets you concentrate on the ride.

I’ve used every sealant out there at one time or another. Black OX2 is the best sealant I’ve used for gravel and road tires. No flats yet after several hundred miles on gravel and asphalt.

So far so great. It has sealed quite a few punctures that I didn't even know I had gotten in Northwest Arkansas until I was cleaning my bike after rides so it's working great.

Very pleased with the OX2 so far! We’ve been using it in the cross country bike and the trail bikes with great results. The OX2 is a great sealant for novice riders who don’t change tires often it also seems to have a longer life which means more time in between reapply. This is a great product for road, xc, single track trail riding and just everyday use! But we currently still use the XO1 in the downhill and enduro bikes which a better choice for more aggressive riding and instantly sealing.