Rear wheel bearing seals

[larry.whisler]

Netters,

I just received some rear wheel bearing seals that I had purchased on Rockauto.

These were listed on the website as " SKF 21771 " and when I received the seals
they were in 'CR Services' boxes. The boxes also stated that CR Services was
'An SKF Company'.

I thought I would try Rob Mueller's test on them but not having any quarter inch
stock, I measured a stack of 5 dimes to be close. The first two seals passed the test
and then I pulled out the third. This seal was a bit different and would not pass Rob's
test.

All three seals had boxes marked on the end '21771' but there was also a scanner code
label on each box that were all the same except for a code in the upper right hand
corner. For the two correct seals it was 'P32' but for the incorrect seal it was 'O31'.

It was discussed at the Mansfield rally that the SKF 21771 was the correct seal to use
but it appears that it could still be incorrect.

Any other opinions or experiences?

Larry

 

[Jim Hupy]

Anything made by man is subject to slight production variations. Where the
back of the seal is rolled to guide the seal into place can get rolled in
so far that it will rub on the spindle. Metal shavings enter the lube. Bad
juju.
Jim Hupy
Salem, Or
78 Royale 403

> Netters,
>
> I just received some rear wheel bearing seals that I had purchased on
> Rockauto.
>
> These were listed on the website as " SKF 21771 " and when I received the
> seals
> they were in 'CR Services' boxes. The boxes also stated that CR Services
> was
> 'An SKF Company'.
>
> I thought I would try Rob Mueller's test on them but not having any
> quarter inch
> stock, I measured a stack of 5 dimes to be close. The first two seals
> passed the test
> and then I pulled out the third. This seal was a bit different and would
> not pass Rob's
> test.
>
> All three seals had boxes marked on the end '21771' but there was also a
> scanner code
> label on each box that were all the same except for a code in the upper
> right hand
> corner. For the two correct seals it was 'P32' but for the incorrect
> seal it was 'O31'.
>
>
> It was discussed at the Mansfield rally that the SKF 21771 was the correct
> seal to use
> but it appears that it could still be incorrect.
>
> Any other opinions or experiences?
>
> Larry
>
>
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

 

[larry.whisler]

Sorry, but that's not the case here.

The one that failed the test is definitely different from the other
two. The rubber seal is a slightly different design and the codes
on the scanner label indicates that it was not manufactured as the other
two.

larry