Piece Metric Nitrile Ring Assortment Review

I was searching for some reliable nitrile rings for my plumbing work, and I came across this astounding assortment. As my tests showed, these rings perfectly fit every place that required sealing. They have a robust build, and the installation process is effortless. The broad range of sizes is precisely what I needed to hop between different fittings. Being an industrial solution, they feel particularly sturdy and long-lasting. However, they could improve by including additional instructions or

I searched the 'Automotive' section but this set was originally intended for 'Paintballs (BB Machine Guns?)'. However, they are nothing more than nitrile rubber O-rings and can also be used for cars. Made in China as expected.

I used one of the tiny (1mm x 4mm) o-rings to replace the broken one on a Medela breast pump. It fit perfectly and was exactly what I needed. It's worth buying the whole kit, not more expensive pump spares from the manufacturer! Very handy, now I always have more.