3/4" Heavy Duty Split Lock Washer, Black Plain Finish - Hi-Line Inc.
DAE G-75 3/4 in. I.D. 1-1/8 in O.D., Standard Size Union Rubber Washer, 10 Pack – DAE Controls
Ace 3/4 in. D Rubber Garden Hose Coupling Washer 6 pk - Ace Hardware
DANCO 3/4 in. O.D. Flat Faucet Washers (10-Pack) 88577 - The Home Depot
Amazon.com: Washer Gasket 3/4" Rubber Seal Washer Leak-Preventing Gasket Black Pack of 10 : Industrial & Scientific
3/4" EPDM Rubber Water Meter Gasket, 1/32" thick, for 5/8" x 3/4" or 3 – Utility Technologies
EPDM Rubber Washers - 1 1/4" OD X 3/4" ID X 1/8" EPDM Rubber Washers
Black Rubber Washer Large Rubber Washers 1 1/4" OD x 3/4" ID x 1/8" Thickness - EPDM Rubber Washers Flat Rubber Washers Round Rubber Washers (Pack of 12): Amazon.com: Industrial & Scientific