
It was a pleasant purchase. Our reverse osmosis system is several years old and recently, after replacing all the filters, one of the chambers started leaking a little. I measured the width of our o-rings and decided to take a chance. They work great! They stopped a leak in our leaky filter and even gave them to my father-in-law who was able to use them too after measuring his reverse osmosis o-rings. The cost is high compared to the competition and they hold up great after a few months. To what extent they differ qualitatively from the original, we cannot say. I will update if anything changes but so far very happy with this purchase.

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