a/c line gasket?

I need the gasket between the compessor head and the hi side output line on a 73 dodge dart. any ideas?

is it a gasket or an O ring ?

appears tobe a metal gasket

I think this is it but I don't need 18 of them.

http://www.ebay.com/itm/Mopar-A-C-Line-G...=item1e7d18566d

That is probably it , get the part number and go down to your friendly dodge dealer ... or check with a local place that specializes in A/C ... or call classic air in Fl ... or buy them all and sell the rest on ebay ???