Source for washer and O-ring sizing and ordering?

[lhommedieu]

Is there a source for washer and o-ring sizing and ordering? Say I wanted to place a silicone washer next to a ss washer on a bulkhead, for example, or place an o-ring around the lip of a ss container. Where would I go?

 

[brewbama]

Google. Seriously. I have searched for hardware using size and material descriptions with pretty good success. For example, my mash tun leaked at the bulkhead fitting so I searched for 1/2" inside dia silicone washer and a 1/2" inside dia SS washer. After a little looking at the results I found what I needed and solved my problem.

https://www.williamsbrewing.com/SIPHONLESS-LID-SEALING-O-RING-P3078.aspx