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How to seal Tygon tube to barb fittings

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nuckolls.bob(at)aeroelect
Guest

Posted: Wed Apr 28, 2021 5:24 am Post subject: How to seal Tygon tube to barb fittings

At 08:12 AM 4/28/2021, you wrote:



  	  Quote: 	
		    I make a tourniquet using two wraps of lacing cord.Â  Really easy and seems to work fine.



  Steve Stearns

  O235 Longeze

  Boulder / Longmont CO

 	
 

  Here's a string tie technique that produces a

  very secure installation:



  https://tinyurl.com/ydms6p4a



  Used this yesterday to refurbish the CO2 discharge

  line on my DIY 'sodastream'. The old one I cut off

  had been on there 5+ years and was still tight.



 

   Bob . . .



   Un impeachable logic: George Carlin asked, "If black boxes

   survive crashes, why don't they make the whole airplane

   out of that stuff?"

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rparigoris

Joined: 24 Nov 2009
Posts: 805

Posted: Thu Apr 29, 2021 7:27 pm Post subject: Re: How to seal Tygon tube to barb fittings

Hi Group

Thanks for replies. I ended up using on suspect barbs either double .025" safety wire or a constrictor single or double knot using lacing cord, then a drop of thin CA. Ron P.

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rparigoris

Joined: 24 Nov 2009
Posts: 805

Posted: Thu Apr 29, 2021 7:37 pm Post subject: Re: How to seal Tygon tube to barb fittings

Hi Group

BTW working with A65 Tygon tubing, the 5/32" ID and 9/32" OD is a tad too large for a few of my barb fittings but I mentioned how I solved that issue (either double wrap of .025" safety wire or single or double over constrictor knot using lacing cord and a drop of thin CA). It's also a tad too small for others. I brought over a ceramic coffee mug with a 300 watt immersion heater and heated water to 170F. 10 seconds of Tygon dipped in makes it nice a pliable with near zero chance of hurting the tubing. You can kinda sorta use a heat gun, but you need to be really careful. Overheat just a little too much and you damage tube permanently. Ron P

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