Pack of (25) CD4460 Schrader Valve Cores with Teflon Seal (blue)

I bought these because I finally exhausted my supply of old-school Schrader Tire Valve Cores that I've had stashed in my tool box forever. Well, at least since the late 1960's. Actually, there's still a couple old ones left in its cardboard box but the rubber has dried out. First thing I did when the new product was try one out in a bicycle tire, and bingo, works great. Appear to be a well made product. These valves will also work for my motorcycle and automobile tires. I imagine this 25-pack will be (beyond) a lifetime supply. Teflon should last way longer than the old rubber ones.

These stem cores are superior in quality and made for a leak free install. It's about 50 cent a piece and a great value for the quality you're getting. The seal if teflon so I'm sure it will last much longer than the previous ones I extracted. Highly recommended purchase!

As described.

Expected them to be made in the USA but I was mistaken.

I've replaced a few leaky valve cores with these, and they have stopped the leak so far. Some buyers have voiced their concerns about the seals used in these valve cores; but they've hold-up for me. I will update this post for future reliability of this product.

Used to use these on the job in the refrigeration business. They have a teflon seal and have had little or no problems with them. Just changed out all my schrader valves on my lawn equipment with them. Should help prevent or eliminate the leaking tire problem I had.

Amazing stuff, from mass production, low price, and critical for a good job.

I have used lots of packs of these in R410a and R22 Split systems in residentials. No issues such as leaks or thread problems on any one of them.These just work. One important note. On the Appion core remover, you will need to press the core hard into the remover tools' groove otherwise you will not be able to withdrawn the core after loosening it. On the AccuTools core remover, you will not need to press hard for the remover tools' groove to hold it.