o-ring sizes, can we get a "sticky"

[clydesdale]

1. For the fuel drain valve it is #202 viton.
2. For the HPOP hoses and aftermarket crossovers- it is a #5 boss o-ring or -905 (90 durometer .414 ID .072 wd)

Can someone add the pedistal o-rings, IPR o-ring and whatever else they might know? It would likely save time for all of us. It beats searching through the archives. Thanks

[jgarden]

Here is some info (credit goes to Calico5 - from an old post he made):

The o-rings on the HPOP system are standard SAE straight-thread ORB (o-ring boss) type.

For the -6 fitting (the ones on the HPOP) the o-ring is a "-906" (.468" id x .078" wd).

For the -5 fitting (the ones in the heads), the o-ring is a "-905" (.414" id x .072" wd). The durometer (hardness) should be 90 for all ORB o-rings.

These o-ring numbers are specific to the SAE o-ring boss fittings. "Regular" o-ring numbers and dimensions are slightly different (although, in a pinch, a "regular" one will work!)

Viton is the prefered material, however BUNA-N will work, but the temp. rating is limited to about +230*F (viton's good to +400*F).

The ORB o-rings are generally available from any good hydraulic or industrial equipment supplier. HERE is one source (scroll down the page a bit!).


I was thinking of making up a www page with all the oring sizes. All I need is TIIIIIIIIIIIME.

[Mach1]

Good info

[clydesdale]

I can't find the ipr o-ring size but I believe I found the turbo pedistal o-rings in the archives. But if you know the IPR size, it would help.

Klhansen had found this a while ago:

Found the sizes for the turbo pedestal o-rings.

The smaller ones (supply) are -205 (0.421" ID x 0.139 thickness)and the larger ones (drain) are -211 (0.796 ID x .0139 thickness).

I usually get them from International for about $1 each. They have a yellow coating on them for what it's worth. The one's you could pick up at a plubming shop or hardware wouldn't have the coating.

[klhansen]

Here's what I have (gleaned from a number of sources - some I measured and compared with a chart I found at http://www.oringsUSA.com)

Application ------------------------- Size
Turbo Pedestal Supply o-rings --- –205
Turbo Pedestal Return o-rings --- –211
Fuel Drain Valve o-rings ---------- –202
Fuel Drain Valve Stem o-rings --- –013
HPOP hose/plug o-rings ---------- –906
IPR O-ring (large) ----------------- -114
IPR O-ring (small) ----------------- -012
Locking Hub external o-ring ------ -152
Locking Hub dial o-ring ----------- -142

o-rings for HP oil should be Viton 90 durometer.

I'll move this up into the 7.3L Engine & Drivetrain FAQ forum. Feel free to add more info.

[hit_cb]

anyone know where i can find the giant O-ring/gasket that goes inside the turbo housing???

[firemediceric]

Can anyone list the sizes and an after market source for the O-rings on the fuel filter?

Without buying the entire filter, I would like to be able to have an x-tra O-ring for the lid, the beveled one and the one that goes around the filter element.

[klhansen]

Originally Posted by firemediceric

Can anyone list the sizes and an after market source for the O-rings on the fuel filter?

Without buying the entire filter, I would like to be able to have an x-tra O-ring for the lid, the beveled one and the one that goes around the filter element.

You could check that link I posted a couple of posts up, but I don't think you'll find the fuel filter lid o-ring, unless you special order and buy them by the 1000's. They are a triangular cross section, not a normal round x-section o-ring.

For the round x-section one at the base of the filter element, you could measure it and match it up to a stock size. For something that big though, it's tough to get a correct diameter without a measuring cone (see the link for info on those). You could get close by using a caliper on the filter element and taking a bit off to account for stretching the o-ring on.

[petr]

I found this while doing a search. It lists sizes, vendors, and part numbers for the o-rings on the 7.3

Powerstroke O-Ring Chart

I hope it helps someone.
Pete