I've noticed a lot of the color coded re-pop vacuum lines are of marginal quality. Probably a result of custom low volume product coming out of China. Best way to get good hose is to buy name brand, US made products in a spool.
Long time ago I bought a spool of 1/8, 3/16, 1/4, 5/16, 3/8" and they have lasted me for years. Not cheap though. I think the industry name is "Low Pressure Petroleum" hose.
Or order spools of Gates automotive vacuum line from lots of sources. I used to go to the auto parts store and just ask how much the entire spool of hose was.
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