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Old 10-27-2021, 11:12 AM   #1
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Source for flanged 1/4 ferrule?

I noticed that some of the 1/4 inch air lines on the 2000 freightliner chassis have a very odd ferrule that no one seems to carry? At its midsection it has a small "flair" or stop that protrudes out.

Anyone know who carries this?
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Old 10-27-2021, 01:00 PM   #2
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Is this the type of ferrule you are asking about?




DOT air line fittings
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Old 10-27-2021, 02:19 PM   #3
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Quote:
Originally Posted by Old-Biscuit View Post
Is this the type of ferrule you are asking about?




DOT air line fittings
Yep... I couldn't even find a picture!

Where do they sell those?

I tried using standard ferrules and they leaked.
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Old 10-27-2021, 03:57 PM   #4
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Try this?

https://ustrailerparts.com/1-4-o-d-brass-tubing-sleeve/

I actually took the picture posted and dragged over to a Google Image Search to find.
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Old 10-27-2021, 04:48 PM   #5
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Truck shops should have DOT air line fittings.
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Old 10-27-2021, 04:53 PM   #6
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Quote:
Originally Posted by carybosse View Post
Try this?

https://ustrailerparts.com/1-4-o-d-brass-tubing-sleeve/

I actually took the picture posted and dragged over to a Google Image Search to find.
Thanks!
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Old 10-27-2021, 04:54 PM   #7
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Thanks!
Neither the mobile tech or the local truck place has ones with flanges on the side...

Whats the purpose of the flange?
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Old 10-29-2021, 03:29 PM   #8
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Quote:
Originally Posted by bpu699 View Post
Neither the mobile tech or the local truck place has ones with flanges on the side...

What's the purpose of the flange?
I believe it's to prevent overtightening that would crush a plastic tube .
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Old 10-29-2021, 03:34 PM   #9
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I believe it's to prevent overtightening that would crush a plastic tube .
Odd, tube I took it off was crushed .

It may have something to do with sealing, as I tried 3-4 other similar ferrules an none provided an air proof seal…
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Old 10-29-2021, 04:33 PM   #10
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It's a compression sleeve:
https://hi-line.com/1-2-tube-o-d-d-o...ession-sleeve/
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Old 10-29-2021, 08:09 PM   #11
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All the compression fittings I’ve used on nylon air lines had a tube insert to keep from crushing the air line preventing leaks.

https://www.haldex.com/en/na/airline...ittings/11131/
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