Delta kitchen faucet - low flow issue

I think I need to replace the two o-rings the seal the spout. But not sure what o-rings I need. It's probably a 25 or 30 year old single handle faucet that looks like a Delta.
You're going in deep with sleeves rolled up that's an old faucet. Go to depot, lowes or walmart and pick up a new faucet its a summer cottage don't have to go wild if the supply valves are 3/8 compression most new faucets come with pre-attached water lines and you're done. I would just check your valves I did a faucet for my father his valves were 1/2" NPT had to get adapters to adapt to 3/8 compression.

https://www.walmart.com/ip/Mainstays-Pull-Out-Kitchen-Faucet-in-Chrome/5624446069
 
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I think I need to replace the two o-rings the seal the spout. But not sure what o-rings I need. It's probably a 25 or 30 year old single handle faucet that looks like a Delta.
I believe you are looking for these o-rings to seal the pivoting spout on a classic Delta single handle kitchen faucet.

DELTA RP-25

They should be available at Home Depot or Lowes, either as a Delta brand or a Danco aftermarket part.
 
You're going in deep with sleeves rolled up that's an old faucet. Go to depot, lowes or walmart and pick up a new faucet its a summer cottage don't have to go wild if the supply valves are 3/8 compression most new faucets come with pre-attached water lines and you're done. I would just check your valves I did a faucet for my father his valves were 1/2" NPT had to get adapters to adapt to 3/8 compression.

https://www.walmart.com/ip/Mainstays-Pull-Out-Kitchen-Faucet-in-Chrome/5624446069
Nothing at the summer cottage comes apart easily. The shutoff valves are one normal quarter turn ball valve sweated into 1/2" copper and an old fashioned globe valve sweated into 1/2" copper.

Given that I have the faucet apart and now just a matter of cleaning or replacing the diverter and replacing o-rings that would seem to be the easiest path forward.
 
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