Q. Do the front bearing caps (domes) have a rubber seal gasket that goes on first? If so what is the part number and where to find. seal only that is. Checked various suppliers with no luck.
Thanks in advance for any reply.
Rich

Found it no real information other than it exists. I do recall it now. It was basically an o ring.
Should be an ace hardware part

Yep, go to your local hardware store.

If anyone knows the size I'll bring in a crapton and make them available cheap..I can check tomorrow if no one knows.
Mark

I wouldn’t mind an O ring for the 911 front hub. Paying $2.50 for them gets old.

only /4 use this 421.839.455, but the parts book has it part of the /6 assembly.
Absorbent foam rubber, used to pick up the grease slung passed the cap.
NLA years ago.

How does that O-ring sit; in a groove, or ??

My recollection is that it was a standard rubber O ring. If it is other I can still do, just might as well make it the same or better. If I recall it just sat on the base of the cap to deter crap from getting in.

Yep

dubl

It was not hard rubber.
I was softer .....and it had a seam.
Haven't seen one in years.
I fit behind the rim of the grease cap.

Squashed between cap and drum section of the brake disk.
Very soft material, I may have old used examples I kept for posterity.

Well I know a guy that makes rubber stuff.
Just curious if the new reproduction caps have the same ridge. I'm doubting it. But please post up some pics.
Mark

Yep squashed like the ones I removed in question. Click to view attachmentSee pic. I was just curious if they were available. Moving on without them.

Can you measure the thickest part? I think these could be easily made.

I will tonight when I get home. They are pretty ragged but I should be able to get it for you.

Thanks,
Just trying to determine the original thickness as best as possible.

Wow, never knew these existed. Maybe it'll help make removal of
those caps a little easier.

3 mm would be a good guess. It is kind of a foamy rubber material if that matters. I would be more than happy to send them to you for your archival R & D division. . Headed to the trash otherwise.

Click to view attachment

Ok found mine, 3 old ones and a new one that broke while trying to fit it, old stock adhesive gave up.

4 mm cross section 153 mm long, it is made of foam rubber with a smooth surface, older ones have grease residue. New is smooth and clean.



Click to view attachment

Thanks,
I'll get these going