Fibre Washers: Fibre Sealing Washers in Metric & Imperial Sizing
Fibre Washers Imperial WS 010. 8 x Sizes: 13/64" x 3/8", 1/4" x 3/8", 5/16" x 5/8", 3/8" x 5/8", 29/64" x 11/16", 1/2" x 11/16", 5/8" x 7/8", 49/64" x 1".
Fibre Washer Kits Metric — Corseal
Imperial Fibre Washers 29/64",15/32",31/64" and 1/2" I/D's . 11 different sizes | eBay