I worked for a company that built INDUSTRIAL sized ice cream manufacturing freezers, used ammonia gas as a refridgerant. Our smallest freezer made right at 100 gallons of finished ice cream an hour, 400 liters, biggest made over 400 gallons an hour, and we built every size in 1, 2, and 3 barrel versions, so biggest model made 1200 gallons an hour if you had enough refridgeration compressor. I forget which brand exactly we used of Teflon pipe thread sealant, If our supplier ran out of the specific brand I had to call around to find that specific brand. The ammonia would dry the thread sealant out to a powder and it would leak. People don't like ammonia gas leaks in their factories.
For ANY kind of stamped paper or composite gasket I use HYLOMAR UNIVERSAL BLUE gasket sealant. It beats every kind of Permatex Aviation Form-a-gasket, or any other brand. It works on cork gaskets too but I absolutely HATE cork gaskets.
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Today's Featured Article - A Question for Dads This recent topic from the Tractor Talk discussion board is being highlighted because it is an awesome display of the caliber of individuals that have made this site their own. The young person asking questions received positive feedback and advice from total strangers who "told it like it is" with the care many reserve for their own kids. The advice is timeless... so although it isn't necessarily antique tractor related, it will be prominently displayed in our archives to honor those who have the courage to ask and those who have the courage to respond in an honest, positive manner.
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