Get them from
http://www.mcmaster.com (mcmaster-carr). VITON o-ring in the EXACT size that you need for the return caps. Mcmaster part No. 9464K24 just put that in the search box. You get a bag of
-50- of them for only $5.93 !!
They also have the viton return line in the right size too. Sell it by the foot. mcmaster also has the fastest shipping on the planet, I swear!
Make sure you Vaseline the 0-rings good before you try and put them on, and for whatever reason, you put the top one on first, then slip the 2nd one over that; just works; dunno why!
