Hello,
I am trying to identify the manufacturer of the part shown in the photos below. It is a flow restrictor that is made out of plastic with a porous stainless steel insert. The thread size is either 10-32 or M5, and it is approximately 4.5mm long. It is used in conjunction with an o-ring.
I suspect it is used for gas chromatography, but the machine I got it from is a custom test instrument, so I'm not sure if this is a standard part or if it is custom made.
I would like to be able to order more of these specific parts, so I am hoping to find the manufacturer. Thanks!

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