Hydraulic Reservoir Hose Specs?

Can I get some recommendations as to what kind of 5/16" flexible hose is used to connect the brake fluid reservoir to the master cylinder on a '120? I have a length of fresh stock SAE-30R7 fuel line hose, but I’m thinking it might go gummy and gooey if I attempt to use that with DOT 4 fluid. Something readily available. I’m not finding anything in the archives. Thanks.

Check with the local FLAPS store, you are correct not to use the fuel hose.