CPC G01N 23/04 (2013.01) [F16J 15/3284 (2013.01); G01N 23/083 (2013.01); G01N 2223/629 (2013.01)] | 20 Claims |
1. An O-ring comprising:
a cord formed from an elastomeric first material, wherein the cord has a circular cross section and is formed into a continuous loop; and
one or more radiographic markers, comprising one or more second materials having one or more radiopacities greater than a radiopacity of the elastomeric first material, wherein the one or more radiographic markers are provided on an outer surface of the cord.
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