REally quick question
 

I'm trying to do the vacuum simplification and I was wondering what size of silicone caps i should use to cap off all the uneeded lines. I was also wondering where can i get some silicone caps? most companies i've found require to buy in bulk..
Thank you any help kinda help would be apperciated

You don't have to buy silicone caps you could use rubber for those. I think 4mm will work for most and you probably can pick them up at a local auto parts store

Yea I don't think there is a need for silicone caps, I would sip tie the rubber ones on.