Windshield washer fluid tank

Have a windshield washer fluid tank on my 52 Hornet that has quit working, it seems the rubber piston seal in the vacuum canister has dried up,...it was working a few months back.
Anyone offering parts for these units?
There is no name on tank, although it is a glass jar with a metal screw on lid, the vaccuum canister is inside the glass jar if that helps.

Dave

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