I purchased this sealant injector to simplify the installation of Stans Sealant into my wife's gravel bike tires. This worked perfectly fine for me and I had zero issues with any mess or sealant leaking between the hose and the valve stem. I would highly recommend this injector for anyone using tubeless tires and sealant.
I just switched to tubeless on both my fat bike and my gravel bike, so I'm new to the whole process, but I have learned that refreshing the fluid in the tires is important and that it helps to know how much to add. This makes it easy to monitor the exact amount going into the tire. I would recommend removing the plunger to add fluid to the injector rather than drawing it in through the tube to minimize dripping , but other than that, this is a very useful addition to my kit.
Adding sealant is a messy process for me, and I'm never quite sure exactly how much sealant is getting in the tire. Yes, I'm a rookie mechanic with tubeless tires. The sealant injector helped me measure the sealant. The adapter to screw-on the tube to the value stem is helpful. I haven't mastered venting air from the tire as it is displaced from the tire. Rotating the wheel Slightly helps, but I'm open to suggestions on how to vent the air without making a mess. The injector does not have a vent that I can figure out.
I use this with Orange Seal (yes, it is compatible). Makes the job easier and more precise. Nozzle threads onto valve stem, eliminating leaks, and the syringe body has clearly marked volume indicators. BTW, it does NOT come charged with Stan's sealant, just their label.
Although it's another tool you need to keep around this makes it so easy to add an exact amount of sealant to your tires and without a ton of mess. The end of it screws on to the valve stem and makes it super easy to inject the sealant. There's usually a small amount of bubbling after you disconnect but other than that it's super easy to use. If you rinse with some water immediately the clean up is not any worse than washing you hands.
I use this for road tubeless. This makes it sooo much easier to put sealant into your wheels. Whether it is the first shot, or a refil it makes it so much easier to just push the sealant through the valve stem instead of trying to fill the tire, then mount. I do flush it out with water after each use so that nothing builds up in the cylinder or tube.
Simply remove the core from the valve stem, fill the injector with sealant and add the sealant to the tire. The kink in the tube keeps the sealant from running out of the tube until you are ready to add it to the tire. Really works well.
Having never had tubeless tires before I was hesitant to go that route but it is the direction road tires are going. The Stans NoTubes injector makes it simple and clean to get the tire sealant into the tire.
No fuss no mess.
Out of the box the fitting does not work on Presta stems. I used a small piece of vinyl tubing as a sleeve over the presta stem to space it to fit the nozzle on this syringe. You must remove presta valve core otherwise pressure of syringe closes valve and makes it difficult if not impossible to fill tire with sealant. With a sleeve as spacer on stem it works well. The nozzle should have a threaded adapter included to fit Presta stems, otherwise a great tool.
The adapter does not screw onto presta valve stems. I had to remove the adapter and connect the tube directly to the stem. This method works but is messier than it could be if the adapter actually worked.
Exact experience from this previous review
One star because it works or it doesn't.
The new injector, with the new cheap plastic fitting does not work. I bought a replacement injector after having used my old injector for the past several years. The old injector had a brass fitting and worked great. The new injector has this piece of junk plastic adaptor. I could not get it to screw on to my presta valve at all. I ended using my new injector as spare parts for my old one. Stans needs to get rid of the substandard plastic injector and go back to the brass fitting.