AR2767 o-ring kit from Annovi Reverber. The AR2767 has over 21 o-rings that will work with almost any of the pumps that are made by Annovi Reverberi. You should always have a few of these kits on hand so you're never with out the correct size for getting your pump back up and running for your pressure washer business.The AR2767 more than likely has the size o-rings you need, but if you're not really sure, find your pump on our breakdown page and verify if this is the best o-ring kit you can have on hand for your easy pump repairs. Click here to visit our pump breakdown page.