1 : in the pressure testing of fluorocarbon tube fittings, any external leakage of fluid through the tube wall or the tube fitting connection, whether it be catastrophic or a slow leak. [SEMI F10-93] 2 : in the seal testing of fluorocarbon tube fittings, the separation of a tube from a tube fitting connection, or the tearing of the tube. [SEMI F7-92]. Also see equipment failure.
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