Brake booster seal?

[TTDRIVER]

I am putting my engine bay back together and was wondering if someone could help me out? When I removed the breake servo (booster) before the restoration, it had a silicone seal that the previous owner had put on the firewall were it meets the booster. My question is do I need to apply a silicone seal or any type of seal to the backing of the booster were it meets the firewall when I reinstall it?

Thanks

Saro Fagerian

[RB30-ZED]

Yes, but its only to keep water out from behind the booster to stop it from leaking in to the drivers floor and prevent rust.

Steven

[TTDRIVER]

I see. Thanks for the info.