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Crankshaft Seal Identification
Posted by: Phil Dally ()
Date: April 07, 2021 09:17AM

I believe I already know the answer...but!!

Should I or should I not use any old seal?

Victor 46248 comes up as a NAPA number.

26 and 28 are cast in the smaller's rubber.

3851853 comes up NORS on the internet.

Both far right are brand new out of bag.

Top left looks to be a Clark's for sure.

All seem very pliable and very usable.

Which are Viton so do not use at all?

Whom the crank seal guru out there?


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Re: Crankshaft Seal Identification
Posted by: Vairismo ()
Date: April 07, 2021 09:36AM

Weren't the Viton ones made in brown color. So if they are black, then not Viton. Can't say for 100% that is the case, just what I have come to think.

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Re: Crankshaft Seal Identification
Posted by: Phil Dally ()
Date: April 07, 2021 09:51AM

None have brown rubber...all are black sealing surfaces.

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Re: Crankshaft Seal Identification
Posted by: Lane66m ()
Date: April 07, 2021 10:08AM

Clark's sold brown Viton crankshaft seals in the past. I just threw one out that was in my FC parts supply when I bought the Greenbrier.

Al
Georgia

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Re: Crankshaft Seal Identification
Posted by: davemotohead ()
Date: April 07, 2021 12:52PM

Pic the freshest feeling one and use it! As long as the rubber feels soft and pliable they should be fine, the ones with the notches on the metal are the original style / type, I have found some of the newer replacements without the notched metal had missing rubber from the seal area where it was not made correctly, the Viton ones are the same color as the Viton Pushrod O-rings as in this pic, Viton does not work on a moving / rotating live seals, they eat themselves up! Also on your diff seals, they both install with the spring side towards the diff, no backwards seal as they where installed in the 60-62 diffs, GM sent a work order revision correcting the orientation of that seal between the diff and trans as they leak when in backwards.







1960 4dr sedan caveman car
1961 Rampside (Chetside)
1962 Rampside (Barnside)
1962 Short Rampside (Shortside)
1962 Monza 700 Wagon
1963 Monza 900 coup (General Nader)

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Rust Free Lancaster Ca

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Re: Crankshaft Seal Identification
Posted by: Phil Dally ()
Date: April 07, 2021 01:35PM

10-4...using the newest set that were in the bag.

Differential (Dan the Gear Man) seals are correct.

When I get the old (Not by Dan) Diff out I will do.

A comparison thread with side by side pictures.

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Re: Crankshaft Seal Identification
Posted by: JimBrandberg ()
Date: April 08, 2021 04:32AM

What's the deal with the notches? Is it called a complex seal? I sorta go around with a 3/8 punch and flatten the metal a bit as a final step but don't I know if it's correct. They seem to do okay.

Jim Brandberg
Isanti, MN
CorvairRepair.com



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