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aze · 12-13-2006, 09:45 AM

I bought some cheap tubing at Home Depot to experiment with a heat-gun bag filling setup I'm working on. It was like $5 for 5 feet, clear vinyl, 3/8" inner diameter.

I found when I subjected it to 400F temps from the heat gun it got soft and actually lost its shape a bit... it was deformed and didn't seal as tight even after cooling back down. This can't be healthy... there must be some bad outgassing going on.

I found the following plastic tubing that is rated for 400F:

http://www.usplastic.com/catalog/pro...uct%5Fid=29485

But it's more than $10 a foot and opaque black. Anyone found better/cheaper with a 400+ rating? I know most people use tubing for whip style vapes where it cools right down after a draw, so most probably don't notice problems. I'm going to be putting a continuous 400F for approx a couple of minutes, so I need something more robust.

ITG · 12-13-2006, 11:49 AM

Try this:

http://www.usplastic.com/catalog/pro...duct%5Fid=8456

Although it doesn't specify it there, platinum treated silicone tubing has a temperature range of -150 F to 400 F. It's also much cheaper!

**Sofa King** · 12-13-2006, 06:37 PM

Quote:

Originally Posted by ITG

Try this:

http://www.usplastic.com/catalog/pro...duct%5Fid=8456

Although it doesn't specify it there, platinum treated silicone tubing has a temperature range of -150 F to 400 F. It's also much cheaper!

Be careful using things with silicone. Silicone vapor is an irritant.

5drive · 12-13-2006, 10:32 PM

Any food grade tubing is OK. You don't need it to withstand 400F. The vapor/air entering the tubing is nowhere near that hot. US Plastics has several types in the Tygon brand that are good up to 165F if you use a short or thin walled whip (glass piece) and want to feel safer.

Noeone · 12-20-2006, 03:50 PM

You might want to try this site as well (I know it looks fake but I've gotten stuff from them with no trouble)
http://www.mcmaster.com/

12-13-2006, 09:45 AM	#1
aze New Member Join Date: Dec 2006 Posts: 31 Grams: 1,121.80 Groans: 0 Groaned at 1 Time in 1 Post Thanks: 0 Thanked 1 Time in 1 Post Stock Portfolio Total Value: 0.000 Gain/Loss: 0.000%	tubing that withstands high temps I bought some cheap tubing at Home Depot to experiment with a heat-gun bag filling setup I'm working on. It was like $5 for 5 feet, clear vinyl, 3/8" inner diameter. I found when I subjected it to 400F temps from the heat gun it got soft and actually lost its shape a bit... it was deformed and didn't seal as tight even after cooling back down. This can't be healthy... there must be some bad outgassing going on. I found the following plastic tubing that is rated for 400F: http://www.usplastic.com/catalog/pro...uct%5Fid=29485 But it's more than $10 a foot and opaque black. Anyone found better/cheaper with a 400+ rating? I know most people use tubing for whip style vapes where it cools right down after a draw, so most probably don't notice problems. I'm going to be putting a continuous 400F for approx a couple of minutes, so I need something more robust.

12-20-2006, 03:50 PM	#5
Noeone Sr. Member Join Date: Apr 2006 Posts: 478 Grams: 5,312.65 Groans: 1 Groaned at 0 Times in 0 Posts Thanks: 29 Thanked 172 Times in 89 Posts Stock Portfolio Total Value: 0.000 Gain/Loss: 0.000%	You might want to try this site as well (I know it looks fake but I've gotten stuff from them with no trouble) http://www.mcmaster.com/ __________________ In any case civilization has made mankind if not more bloodthirsty, at least more vilely, more loathsomely bloodthirsty. In old days he saw justice in bloodshed and with his conscience at peace exterminated those he thought proper. Now we do think bloodshed abominable and yet we engage in this abomination, and with more energy than ever. Which is worse? -Fyodor Dostoevsky

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12-13-2006, 11:49 AM	#2
ITG Sr. Member Join Date: Nov 2006 Posts: 1,156 Grams: 17,797.03 Groans: 3 Groaned at 1 Time in 1 Post Thanks: 393 Thanked 513 Times in 277 Posts Stock Portfolio Total Value: 0.000 Gain/Loss: 0.000%	Try this: http://www.usplastic.com/catalog/pro...duct%5Fid=8456 Although it doesn't specify it there, platinum treated silicone tubing has a temperature range of -150 F to 400 F. It's also much cheaper!

12-13-2006, 10:32 PM	#4
5drive Slacker Join Date: Aug 2006 Posts: 3,417 Grams: 8,769.08 Groans: 6 Groaned at 5 Times in 5 Posts Thanks: 287 Thanked 731 Times in 486 Posts Stock Portfolio Total Value: 0.000 Gain/Loss: 0.000%	Any food grade tubing is OK. You don't need it to withstand 400F. The vapor/air entering the tubing is nowhere near that hot. US Plastics has several types in the Tygon brand that are good up to 165F if you use a short or thin walled whip (glass piece) and want to feel safer.

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