Dam Radiator stop cok valve

corolla,1993 4e-fe

Dear Members,

I recently flushed my radiator in my corolla.
When I closed the stop cok valve I noticed that it continued to drip a quite a bit (even after wiping under the radiator).

I decided to wrap the cok in some PTFE tape as used by plumbers.
I hope this will work, if it does not, any ideas?

Cheers

I think my '92 has an O-ring on the end of the stopper. It pretty much quits running with it just stuffed in the hole without even screwing it in.

The teflon tape will probably make it not drip anymore but it MIGHT make it difficult to get the plug out in the future after it ages.