A Study Of Seals

[Keith Webb]

Just a guess but this looks like the transfer case power take off seal.

Originally Posted by Hanno Spoelstra

Seal "no.1":

NOS, leather seal.

Measurements:
OD: 1.831"/ 46,5 mm
ID: 1.3"/ 33,02 mm

No other details known.

Who knows where this seal fits?

[Keith Webb]

Originally Posted by Keith Webb

Just a guess but this looks like the transfer case power take off seal.

Yes it also looks like the F15 hub seal.

[Col Tigwell]

Chicago Rawhide and National who are the two largest USA seal suppliers put out several cross over books

One from OEM part numbers to theirs.

Another cross references from size to manufacturers numbers.

Also Cr produce another publication on sizing for speedy sleeves which have to be one of the greatest inventions since the war. What is not commonly known that if the shaft is out of limits for roundness, the sppedy sleeve will bulge up and make the shaft unusable. When I worked for Kenworth we did not bother with micrometers if the sleeve went on OK then you could be sure it would not leak.

regards

Col

[Phil Waterman]

Cross Reference and Dimensional Information On Line I have been using Motion Industries for a number of years to purchase seals and bearings for my CMPs they have a very usable on line sited http://www.motionindustries.com/moti...mii/index.html which I have found almost every seal and bearing that I have needed. Most of the seal numbers or bearing numbers found on Chevy CMP parts are still good numbers. The Motion Industries site also gives you the dimensional and detail information on the parts. One word of caution be sure to look at all of the cross over possibilities as there is a huge price range for “interchangeable” parts example wheel bearing depending on the precision and speed range have a huge cost.

Even if you don’t use Motion Industries the listing gives you a number of different manufactures for the same parts.


Cheers Phil


3August2019 - just checked and the link to Motion Industries is still good

[Bob Carriere]

When I was purchasing bearings and seals I use a small dirm in Ottawa that had a web search engine that allowed them to look up parts by dimensions. As long has I had the proper precise metric ID....OD..... thickness.....application.... they were able to find modern replacements.

I did the axles, tranny and T case. At the barn we had 3 instances were the proper bearing could not be found....

..... the flat bearing for the front axle egg cup.... New departure 928....... did find a few old stock but at fantastic prices..... but Dirk has ome NOS.

The bottom bearing for the rear of the tranny was impossible to find.... but found some good used ones from our stock of spare transmissions.

On the HUP front axle there is an inner oil seal..... that keeps the differential oil from moving to the eggcup...... we could not find the proper ID / OD combination...... we opted for the proper ID size and had a local machine shop make an adapter from aluminium that matched available OD dimensions. Installed easily and was pegged in place with a centre punch.

Bob

[Eric Szalanda]

I am just rebuilding my F15A and refitted the front axle. I have replaced all the oil seals with modern lip seals. I do not trust NOS. I just took the old ones in, and sometimes I even took the housing in ( except for the inner seals). I replaced the wheel bearings and cones at great expense. I have a list of part numbers somewhere.
The best service in Australia is Eastern Bearings in Melbourne.

[Hanno Spoelstra]

Look up cross references to modern SKF Chicago Rawhide seals here:
http://www2.chicago-rawhide.com