Lubricate and Reinstall Faucet Stem

surface little silicone grease I'm going to take a chance and say that this washer right here when pressed up against this is actually going to seal with this o-ring this right here was an afterthought that somebody did to stop it at least it's what it looks like to me because I've never seen nothing that shape ever so we will pop this back in here like so and we're going to put this back together and then