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#1 (permalink)      5/13/2020 8:40:12 PM US Central   quote/reply + tips
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rico300zx
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PSU?
What’s PSU? Is it better than PC?
www.youtube.com/rico300zx (Hand Strength and Weight Lifting in case your interested)
#2 (permalink)      5/13/2020 8:50:38 PM US Central   quote/reply + tips
essellar
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Polysulfone. In terms of mechanical toughness, it's about the same as PC or PEI. In terms of chemical resistance, it's MUCH better than PC, though I haven't tested it with enough liquids to say if it's as nearly (chemical) bulletproof as PEI. It's not quite as heat-resistant as PEI, but that doesn't matter when it's used for a tank shell. What it does better than PEI is not be amber-brown, which some people find very important - the colour of PEI reminds them of stains from smoking.
#3 (permalink)      6/18/2020 12:11:33 AM US Central   quote/reply + tips
Superdonkey
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+1 details
essellar wrote:

Polysulfone. In terms of mechanical toughness, it's about the same as PC or PEI. In terms of chemical resistance, it's MUCH better than PC, though I haven't tested it with enough liquids to say if it's as nearly (chemical) bulletproof as PEI. It's not quite as heat-resistant as PEI, but that doesn't matter when it's used for a tank shell. What it does better than PEI is not be amber-brown, which some people find very important - the colour of PEI reminds them of stains from smoking.



I contacted Taifun directly regarding PSU and the availability of PEI tanks for their GT4 RTA. They said they were discontinuing the PEI in favor of PSU due to how much more chemical resistant the PSU is over the PEI. As a disclaimer, I haven't done any measurable testing myself, but the PSU tank material on the authentic GT4s seems to be holding up quite well for me.


Edited on 6/18/2020 at 12:12 AM. Reason: a word, for clarity
#4 (permalink)      6/18/2020 4:09:35 AM US Central   quote/reply + tips
essellar
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Depends on the juice/flavourings, I suppose. I'd bet that there are things PEI shrugs off that would kill PSU and vice-versa. I've been using PEI exclusively for several years now, and haven't found a cracker for it yet. But don't kid yourself, it's about aesthetics - a LOT of people simply don't like the look of PEI, and Smokerstore haven't been able to keep pushing polycarbonate.
#5 (permalink)      6/18/2020 5:24:35 AM US Central   quote/reply + tips
Superdonkey
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I'm in the camp of "PEI is ugly but very durable" so I use it. If PSU can do the same or better job without the coloration, then it's a win-win to move to PSU when possible. But if I had to choose between, say, polycarbonate & PEI, I'd still choose PEI regardless of aesthetics.
#6 (permalink)      6/18/2020 5:24:39 AM US Central   quote/reply + tips
Superdonkey
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doubleposted, sorry.

Edited on 6/18/2020 at 5:28 PM. Reason: stupid lag