source for copper conical gaskets for brake line fittings

Searched "refrigeration copper flare gaskets."

used to use these in HVAC on what little refer stuff we did

https://www.google.com/search?client=firefox-b-1-lm&q=refrigeration++copper++flare+gaskets
https://www.amazon.com/copper-flare-gasket/s?k=copper+flare+gasket&tag=fabo03-20
https://hosewarehouse.com/products/10088-10-088-midland-sae-45-flare-fitting-copper-gasket-1-2
https://streamlineproductinfo.muell...ngs/45--flare-fittings---copper-flare-gaskets