Ring Size Chart & Measurement Guide at Michael Hill NZ
O-Ring Size Chart | Sealing Devices
O-ring gasket set 6.35-57.12mm/ 1/4-2 1/4 (32 different sizes / 407pcs) - MotoMoto
BS 1806 Metric Sizes | Global O-Ring and Seal
Metric O-Ring Groove Design Reference Guide
Vintage Air » Blog Archive Tech Topic: What are the Dimensions and Characteristics of the #6, #8 and #10 O-Rings Supplied with My System? - Vintage Air
14 Piece O-Ring Assortment - Plumbing Parts by Danco
How to Size O-Rings | Learn How To Correctly Measure an O-Ring