First, the fitting has been replaced with a copper coupling. For what its worth the one I removed looks to be plated inside and out, and I don't see any silicon or plastic. However, I think the ring that slips over the copper tubing is just brass. Fortunately I only used it for a cleaning run and sacrificial run.
Second, lesson learned and any necessary apologies offered. The rules here regarding materials are rigid and I accept there are good reasons for that. I will keep my "what ifs" to myself.
Pressure Cookers
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