Hi Chris
This is the closest one I can get to and I believe that it's the one you need. This tube's part number is AP3844472
Maybe you can try to fill the pinhole with an epoxy just to get rid of the mist. But if it does not help you may try to purchase this part online at AppliancepartsPros.com. This will cost $18.68. You may click the link below to access the site where you can order the part.
http://www.appliancepartspros.com/frigidaire-tube-134372100-ap3844472.html
Note: Genuine Frigidaire part. Frigidaire brands include Electrolux, Frigidaire, Gibson, Kelvinator, Westinghouse, and others.
Electrolux also makes various appliance models for Sears / Kenmore
Hope this helps. Is there anything else I can add or help you with? I'll be standing by for your response.
Thank you
Relly