| CPC F16L 17/02 (2013.01) [H05G 2/006 (2013.01); H05G 2/008 (2013.01)] | 25 Claims |

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1. A target material supply apparatus comprising:
first and second fluid flow components that define an axial flow path when joined together, in which the axial flow path is between a source of target material fluid and a nozzle supply apparatus and is configured to pass the target material fluid toward the nozzle supply apparatus, each of the first and second fluid components having inner radial mating surfaces; and
a coupling apparatus configured to seal a joint between the first and second fluid flow components, the coupling apparatus comprising a gasket having an annular shape defining an inner opening that is a part of the axial flow path when seated and sealed, the gasket including outer radial mating surfaces;
wherein, when the gasket is seated between the first and second fluid flow components to thereby seal the joint formed by attaching the first and second fluid flow components, pressure applied to the gasket from target material fluid traversing the gasket inner opening along the axial flow path improves the hermetic function of the seal at the joint at least in part at interfaces formed from interactions between inner radial mating surfaces of the first and second fluid components with respective outer radial mating surfaces of the gasket.
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