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Dry piston ring material

Dry piston ring material

Dry piston ring material

(OP)
What would be your favored material for piston rings in a compressor (dry) going to 10,000 psi or more?  Gas is hydrogen.   

RE: Dry piston ring material

Iainuts:

This will be a multi stage compressor.
In the low pressure stages you can use traditional materials.
In the high pressure stages ceramic materials work.

Regards
 

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