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For tank-to-bowl installations. Standard size is 3-1/4" O.D. x 2-1/8" I.D. x 9/16". Fits most close-coupled toilets.

Black Swan Sponge Rubber Gasket - Tank-To-Bowl, 3-1/4&quot; O.D. x 2-1/8&quot; I.D. x 9/16 Thick - Pkg Qty 25

sponge-rubber-gasket-tank-to-bowl-3-1-4-o-d-x-2-1-8-i-d-x-9-16-thick

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