PBCloud

On the end of the master cylinder sits a round rubber seal 2 1/4" diameter that fits into the recess on the end of the cylinder forming the seal between the master cylinder and the power brake booster. I want to replace as just refurbished the reservoir but having difficulty in finding this part can anyone identify it or know where I can get one?

Kind regards
Paul

Alan 71

Hi Paul,
Take a look at ZIP Products #DB-516.
Is that what you're looking for?
Regards,
Alan

PBCloud

Thanks Alan, but no its that that one its a rubber seal not foam, I have now attached a photo, you can see the seal hanging off the end.

Kind regards
Paul

caskiguy

Don't know if calling Keen may help, but I found this diagram I believe it applies.

caskiguy

It may be this part number # 730392 it fits various GM year cylinders. Seems others on this forum have searched for this item too.
Good Luck.

PBCloud

Having searched a number of forums it seems many have been searching unsucessfully for this part; however this looks very much the part I have been seeking so many thanks I'll follow-up and order, and well done for finding it.

Kind regards
Paul

PBCloud

It seems its out of stock, if you have one do you want to sell it?

Paul

Alan 71

Hi c & Paul,
That looks like a pretty nice find!!!!
Regards,
Alan

caskiguy

I think unfortunately this part has been discontinued, not to say it can't be found. You may have luck at a salvage yard as this part was used on other GM vehicles I believe. I'll keep looking as I easily get hooked on the hunt. If I find it I'll let you know.
Best.

PBCloud

Many thanks, I still have the old one so may be able to copy by cutting some rubber scraps it as its a flat shape.

Kind regards
Paul

caskiguy

I was notified today via an email that you may be able to get a gasket through NAPA Auto Parts, see if they can cross check the old part number, it's worth a try.
Good Luck with the search.

biackbenz

I also have been looking for this part. Including a NAPA store but no one even shows this ring on any of their drawings or listings.

caskiguy

I located this part ( pictured above ) on DocRebuilds website, he had these a while back I guess but unfortunately he sold out of them. I used the picture as a example. From what I gather the master cylinder was used in other years 67-76 and other models Camaro I believe.
Believe me I don't give up the hunt easily, so if I happen to find them I'll repost here.
Good Luck

caskiguy

Couldn't help myself so I just spoke with Keen Parts and the fella I spoke to let me know that this gasket serves as spacer and no air or fluid is effected by this connection. I understand the desire to keep it original but no harm done if one chooses to fabricate their own gasket. I have again learned something new. Which is a very good thing.

carriljc

Hopefully it's ok to mention where i found this.
*****If not, then moderator, feel free to delete.****

Googling for it shows Davies Corvette has this for $3.95 and their part number Part #: 534068 ....and they even mention the gm part number right next to it:OEM/GM #: 730392

caskiguy

You did good. It is a round O-Ring, not flat if you will but will work for me if I ever need one. I'm sure others will appreciate you finding this part. :flag
Thanks

GUSTO14

I always remove and save the seals off of my oil filters as I remove them and throw them in a container. You never know when they might come in handy. You'd be surprised at the different sizes and shapes some of them are. Some are even rectangular instead of round. The fuel filter on my diesel Super Duty uses a big one that is rectangular.

I've found if you need a gasket such as the OP showed, and can't find the exact one, they can often be cut to the length needed and the ends glued together.

Good luck... GUSTO

carriljc

.... since the O-ring part that came with it would not seal. It was just slightly small ....I'd guess "iffy" quality control ...but anyway....

I went to a tranny shop and the guy let me look thru all his "spent" boxes of unused tranny repair parts. There was a multitude of gaskets, seals, rubber parts, gasket parts, and whatnot.

I ended up finding a perfect rubber part. It was even "stepped" so it sealed quite well, I'd guess even better than a properly-sized o-ring would have sealed.

Just an idea for someone looking for seals or gaskets.

Oh, and the guy just gave it to me.