Review on BOLET O-Ring Assortment Kit Set 225 PCS – Premium Nitrile Rubber Sealing Rings for Plumbing, Automotive, and Repairs – Professional Grade for Faucets, Mechanics, Air/Gas Connections (Black) by Steve Washington

You only need one piece of one size, but who doesn't have a few hundred spares, huh? This set also ensured I was the right size for my needs as I was able to try a few sizes. Well, now that I have the whole set, I've found a few other uses for them as well. A good piece for your collection if you are a practical person and the suitcase is welcome. This is great value compared to the small packs you get on the hook in the big stores. Time will tell how quickly the unused rings dry but for the price paid it was worth it just using a few and getting a reusable plastic case out of them.