Ultraseal may be fine, but remember that reputable UK tyre fitter/repair shops will not touch a tube which has any kind of sealant in it. They say they cannot guarantee a correct repair with this goo present. Of course if you're doing your own repairs, then you can give it a try. Or keep replacing the tube for a new one, then add Ultraseal again. If you're on the road, you need to keep all this in mind. Repair or replace?/ To use a sealant or no sealant? I admit I'm pulled in both directions every time I read an informed discussion on this issue...I really dont know what's best....