KOOTANS 1200Pcs Nitrile Rubber O Ring Kit 24 Sizes O Rings Assortment Kit Set Sealing Washer NBR Metric o-Ring Assortment for Plumbing, Gas, Automotive and Faucet Repair, Resist Oil and Heat O-Rings

A lot of good o rings not much more to say.

I just received this O ring set and since I am very impressed I thought I'd leave a review. I cannot of course speak for the durability of the O rings over time because time has not passed, but they do appear to be of uniformly high quality.The set seems pretty comprehensive with everything I should need for decades. The 4 piece hook set included is of higher quality than similar hook sets I own! The case is also higher in quality than most organizer cases that are included with parts sets.It's a very nice touch that the smallest O rings come in bags. If the set gets spilled those bags will be a godsend.At currently $21 for the 1225 piece set I think the value is good too.I spot checked some compartments and the counts were correct. Thanks to the manufacturer for getting everything right with this set!

Kit ended up not having the bring size I needed but I’m keeping it for other future uses.

I needed a replacement rubber o-ring for my mini kerosene lighter. The original one dry rotted and fell apart so can’t have fluid oozing out so needed a replacement BUT, what size? LOL! After going back and forth looking at variety of options and still not knowing what size I need, I decided to go with this one and I’m glad I did. First, packaging was good. Container was rapped in bubble wrap securely. Everything inside the container was in place with zero loose ones drifting into other size slots. All the smaller o-rings starting with the 12x1.5 are in individual bags. The included tools came in handy and assisted me with getting the lil rascal on the lighter. Best part, I’ll probably won’t need to order another o-ring in my lifetime lol. I’m going to keep them in my cool dry basement along along with all my other tools and cool gadgets so they don’t develop dry rot. I have a lot of gadgets that use o-rings so this will be useful. Oh, I used the 11x1.5 size to fix my lighter issue in case you were wondering lol

Exactly what i needed!! Great variety of rings.

Value for money. Appreciated the quality and amount of the rings, the individual packaging for each size, plus the compartmented case and the included tools.

I GAVE IT JUST 3 STARS AND THAT IS BEING GENEROUS ONLY BECAUSE NO WHERE ON THE BOX / CONTAINER DOES IT SAY THEY ARE NITRILE O-RINGS. THAT IS VERY IMPORTANT SO IF ANYONE ELSE ISN'T INFORMED OF THE MATERIAL YOU COULD MAKE A MISTAKE FOR IT'S INTENDED USE. YOU DON'T KNOW IF THEY ARE RUBBER VITON OR NITRILE.

Nice o'rings perfect sizes