Jbl parts number o ring gasket

[bldozier]

I had an 2 hour search for these an lucked out
am found an old post where they had been listed
i didn't bookmark the page can't locate
the post I wanted authentic o rings from
jbl not the hardware store can anyone leade
reference the parts numbers do I even need them
trying to order from jbl?
ring radiator
le5 21771 / 29931 m / 2105
le8 21812 m
le10 21770m
le14 20253

morning thanks