I’m looking for a source for these two copper crush washers. They are used with a double banjo bolt that goes directly into the master cylinder of my 1948 Cadillac. My 1954 Chevy truck master cylinder used the exact same size pair. I assume they are standard among many vehicles of the era. Does anybody know what size they are or a good source to get them? I bought a big set of crush washers from Amazon and none of them were the right size. Thank you for everyone’s help as always.
The Filling station shows them. https://store.fillingstation.com/detail/RW-484/Chevrolet_193666_COPPER_BRAKE_GASKET_OD_1116.html Those are 7/16 ID 11/16 OD and may be too small. O'Reilly's shows a batch of them but you have to sort by measurement https://www.oreillyauto.com/shop/b/...njo-bolts---washers---universal/22568fa85e2a?
Check your local NAPA store. I used to stock an assortment of sizes. They were listed in the United Brake Parts "picture book" by size. Don't know if they still list them, it's been 20 years, and a lot has changed. Chances are better if you find an old traditional store. You know the ones. They smell like oil and grease from the machine shop in the back room and you won't find all the Pep Boys trinkets on the sales floor. Not many of us left.
Another Hamb to the rescue post .....saw a cool video where you tighten the bolt...then tap it with a hammer, then tighten it a bit more to assure a good seal...
The hammer trick works, you can also heat the washer red and quench it in water it will soften up again but any parts store will have an assortment, hell I have a kit of assorted sealing washers at home.
Here is a link to the Napa eRack, all their catalogs online. On the left side is the index, I linked the brake systems. https://www.napaecatalog.com/?market=33&origin=
Unless they are totally wrecked; just anneal the originals you have as @57 Fargo described; once "softened" to their original stage they will work again.
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