| CPC G01N 30/18 (2013.01) [G01N 2030/185 (2013.01)] | 8 Claims |

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1. A ferrule, comprising:
a deformable portion comprising between 5% and 50% graphite and between 50% and 95% polyimide; and
a integrated ferrule sleeve surrounding at least a portion of the deformable portion.
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