for his efforts. Litigation resulted in a $100,000 payment to his heirs in 1971, 19 years after his death.

Theory and design

O-rings are available in various metric and inch standard sizes. Sizes are specified by the inside diameter and the cross section diameter (thickness). In the US the most common standard inch sizes are per SAE AS568C specification (e.g. AS568-214). ISO 3601-1:2012 contains the most commonly used standard sizes, both

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