Replacing a leaking Delta sink sprayer. The o-ring, that allows my kitchen sprayer to swivel, has failed. It's not easy to replace the o-ring without destroying the end of the hose so I replaced the whole sprayer assembly. See the link below for the sprayer I used (most Delta parts should be covered under warranty so check before buying anything):

Sink Sprayer:
https://amzn.to/2JuLltW (affiliate*)

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