View Full Version : help finding oil seal

08-27-2005, 02:57 PM
I am still looking to for a 2.375,2.875 .312 oil seal .Any suggestions where to find one,most internet websites i have phoned have minimum orders of a $100.00.Local suppliers do not handle this size of seal,any suggestions appreciated.

08-27-2005, 03:53 PM
You might check with an aircraft maintenance outfit. I believe they make a seal for the crankshaft on some aircraft engines which can be installed without removing the propellor. It had a plain butt joint offset a little from the case parting line.

The spring had ends which hooked together. It could be trimmed to length if necessary. It was installed after the seal was wrapped around the crank, but before seating it in the case.

It may be that some mechanics were just cutting the regular seals instead of stretching them over the big prop flange on the crank, but I remember seeing several seals that had a butt joint. The jointed seals performed as well as the regular ones.

Perhaps you'll find something with the right crossection and be able to cut it to the right length to fit your installation.


[This message has been edited by winchman (edited 08-27-2005).]

08-27-2005, 04:53 PM

08-27-2005, 04:57 PM
Go to the local automatic tranny shop and see if they can match it up to something.

08-27-2005, 07:01 PM
Federal Mogul has a seal reference book you can look up the specs and cross to a part number.


08-27-2005, 08:14 PM
Call the engineering department at Chicago Rawhide. Tell them you have a special application and would they have a seal for it. If you're lucky they'll drop a couple of samples in the mail.
It's worked for me in the past.

Rich Carlstedt
08-27-2005, 10:30 PM
You want a Chicago Rawhide (CR) 504276 seal.
Its .281 thick , not .312.
These are also used by hydralic cylinder makers, so maybe a rebuilder near you will sell one. I usually have no problem with the local bearing supplier

08-28-2005, 03:49 AM
That is one odd sized seal..I have looked at the CR website and it does not list any seal in that size... I have looked at other websites also and it also does not list it...

I do have a bearing catalogue on CD and it does list that size seal but whether it is available is another thing...

Edit: Found it here... http://www.epm.com/oil_inchpg2.htm

[This message has been edited by Ringer (edited 08-28-2005).]

08-28-2005, 12:54 PM
HI,, The oil seal size you listed,,2.375 shaft size,,2.875 bore x .312thick is National oil seal#253610. I use a local bearing supplier for a not too common seal like this.. JIM

08-28-2005, 09:09 PM
I'm certain I will have it in stock, s&h may be more than cost of seal. I can reply tomorrow @ work if its a size I stock. Sounds like a good size just based on Id & Od


08-28-2005, 09:53 PM
I was in my local bearing shop today getting some seals and o rings and I asked about this size....They had 1 in stock...So if a store in the middle of nowhere in far flung metric Australia have it you should have no trouble getting one in imperial US...

08-29-2005, 06:41 PM
Any luck finding seal, bdollarbill.