« previous next »
Pages: [1]   Go Down

Author Topic: Seal between Master cylinder and brake booster  (Read 4068 times)

Offline 75gmck25

  • Frequent Member
  • **
  • Posts: 439
  • 1975 GMC K25 Camper Special, 350/TH350/NP203
Seal between Master cylinder and brake booster
« on: February 18, 2017, 01:25:13 pm »
I am replacing the master cylinder on my 1975 GMC pickup, and when I pulled off the master cylinder I found a round rubber "cup" seal between the master cylinder and the power brake booster.

The rubber seal is partially broken and the rest of the rubber is in bad shape, so I want to replace it. I think its mainly a dust seal, so I don't think it affects the brakes. However, I can't find it in any online parts lookup (Rockauto, etc.).

Any suggestions on where to find this cup seal?

Thanks,

Bruce
Logged

Offline VileZambonie

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 19177
Re: Seal between Master cylinder and brake booster
« Reply #1 on: February 18, 2017, 06:29:35 pm »
It's part of the booster. I don't know if you'll be able to readily find it.
Logged
,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline 75gmck25

  • Frequent Member
  • **
  • Posts: 439
  • 1975 GMC K25 Camper Special, 350/TH350/NP203
Re: Seal between Master cylinder and brake booster
« Reply #2 on: February 19, 2017, 08:15:40 am »
I ended up buying a new booster to go along with the master cylinder.  Probably not a bad idea oveall, since the booster is probably original to the truck.

I did find a similar seal at a couple of Corvette supply houses, but they wanted $33 just for the seal.  The entire new booster was only about $95.

Bruce
Logged
Pages: [1]   Go Up
« previous next »