Oil plug sealing washer

[Gilles]

In the past my vendor has sent the oil filters with the aluminum gasket for the oil plug inside the filter box.

Yesterday after draining the oil (of course) I discovered that my filter was missing the aluminum gasket... and the old one was too distorted to be reused.

I went to three different auto part stores and found the same size gasket at NAPA, however I could not find aluminum or copper, the gasket I found is made of 'fiber' which I used and torqued the plug at the recommended 37 ft/lbs.

Don't have any leaks, but I am concerned about the aluminum plug becoming loose dropping the oil, any comments against using a fiber seal gasket with the aluminum plug?

Thanks, Gilles