Ultra Inert Liner 5190-2295 specification


we use ultra inert liner for GC with part number: 5190-2295 and we are quite curious, what means another number printed on the liner. There is a part number (5190-2295) and number 90451 on the first liner and number 90467 on the second one. Can anyone, please, explain us, what these numbers mean and  if the liners are same?

Thank you.


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