Drive shaft oil seal shaft

[Triton]

Hi, Can anyone help, A friend is making me a couple of the narrow splined parts that the drive shaft seals run on. we are making them out of a couple of worn out  U/Js.  I know they are 36mm  diameter but i can't  remember how wide they are, I seem to think about  11mm.  These are for a 352 box.  I don't want to remove a shaft to measure one.  If anyone has one could they measure it for me.  Thanks Stuart...

[TurboFource]

This?

[Triton]

Hi.  No,the part i need the measurement of has splines on the inside and it fits on the driveshaft with an o-ring which sits inside on the end. The driveshaft oilseal runs on this part. They are for the 352 box ,i don't know if all the gearboxes have them. Thankyou for posting the photos for me.  Stuart...

[TurboFource]

Sorry, was hoping this was it ….this was on the other end of the things

[Hachille]

Hi,
I hope my photo isn't too difficult to read.
It's probably this part where I placed the dimensions

[Triton]

Many thanks  Hachille,  Yes this is the dimension i needed. We will now make them to  10.3mm.   I  thought it was around  10 or  12mm but i needed an exact. Thanks again  Stuart...