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PostPosted: Sun Apr 24, 2022 5:51 pm 
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Supercharged

Joined: Wed Sep 17, 2008 6:48 pm
Posts: 3590
Location: Indianapolis
Car Model:
I have Dr Diff axels with green bearing on the 68 Barracuda. Looking for replacement o rings for the green bearing I have found numerous internet threads where, when looking for those o rings the response was, ' just go to NAPA they have a bunch of Orings, just match up a set, or just go to your local hardware store...'

I never was an ORing Engineer, so I did some measuring, then went looking for how Orings are sized.

What I found is Orings are largely grouped together by a 'Dash' size. And the Dash size that matches to the Orings that were originally on the Dr Diff Green bearings is a Dash 146.

So you can google Dash 146 O Ring and get a large selection of O rings in the correct size in a variety of materials from several different vendors.

I went with Buna N material, as that material is listed as having good resistance to hydraulic oils, I also went with medium hardness. Using only human tactile, the feel, flexibility, color, gloss of the replacement Orings are identical to the original Orings.

I bought a pouch 10 of the replacement Orings at Granger for $2.95 with tax it came to $3.16
The Granger part number is 41UK44


Attachments:
042422 dash 146 oring granger part number.jpg
042422 dash 146 oring granger part number.jpg [ 68.25 KiB | Viewed 414 times ]
042422 dash 146 oring side by side.jpg
042422 dash 146 oring side by side.jpg [ 67.28 KiB | Viewed 414 times ]

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PostPosted: Tue Apr 26, 2022 6:27 am 
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Supercharged
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Joined: Sat Nov 27, 2004 8:03 pm
Posts: 7780
Location: IRWIN PA
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Great John,

Thanks for Researching / Finding / Listing and Sharing.

Greg

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