O- Ring on Trans. drainplug ?

[rscalzo]

Buy them in bulk..

McMaster-Carr

I only use the vitron orings. Cheap ones are just that. Look at the temp breakdown specs. $12.50 per hundred. For a few cents someone would actually try to reuse and oring?

 

[Iceman24]

Who would've guessed a question about o-ring size would turn into a math lesson. Thought I'd never need math knowledge after college...

Watch out for those young auto parts store clerks - tried telling me HD o-rings were metric...