1969 camaro brake booster to master

[dmarr35]

Is there anything between the Master and the Brake booster o ring or something I am having a vacuum loss in the booster all new I will look in back of Master and check the booster seal without applying the brakes with a vacuum pump I lose vacuum in the Booster Thank You for any help.

[m22mike]

Is there anything between the Master and the Brake booster o ring or something I am having a vacuum loss in the booster all new I will look in back of Master and check the booster seal without applying the brakes with a vacuum pump I lose vacuum in the Booster Thank You for any help.


Rubber cup seal

[dmarr35]

Thank You that is what I thought so I will look gasket and look for a rip if not I most have a Bad Booster

[m22mike]

There is also a small "O" ring on the metal pin that goes into the booster.
What is the history on this booster ?