11/16" OD. 050" thick, no center hole. PPC part #782. I'm Howard Gustafson and I've been a player piano technician since 1985.
10 Player Piano Valve Discs 3/4" OD, 0.157” ID, .045" Thick, Stainless Steel
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10 Player Piano Valve Discs 3/4" OD, 9/64” ID, .030" Thick, Steel
10 NOS Aeolian/Duo-Art Player Piano Valve Seats, 7/16" ID, Stainless Steel
10 NOS Aeolian/Duo-Art Player Piano Valve Seats, 1/2" ID, Stainless Steel
10 Player Piano Hard Fiber Valve Discs, 3/4" OD, 0.052" ID
