So, long story made very short. I need to get the brass and plastic o-rings that come with the Eiszapfen 13/10 mm HardTube compression fittings for brass tubes - knurled - Chrome. Part number 17431. I can’t find them on the shop at all. I’ve tried performance-pcs.com, as well as aquatuning.com and no luck. I have also messaged AlphaCool on their facebook page 5 days in a row with no response. Just being ignored. I have 36 unusable fittings. Please help. I’m not asking for the parts to be “given” to me. I’ll buy them... but i can’t find where or how and AlphaCool so far is just ignoring me... kinda frustrating.