DB9 - vacuum leakage from this brake booster connector

[bosiarz]

I have a vacuum leakage from this brake booster connector. Do you know dimensions of the internal seal to change for a new one? Maybe you know a spare part number?
When I have engine running I hear a sound of a leak, when I move this connector in different directions, sometimes it is better but there is always a leakage.

[paulrog1]

If the leak is from the manifold connector this is what you need -

https://astonmartinbits.com/models/4-DB9-2-4-2-12/...

But it could be the vacuum pipe to the brake servo unit, very easy to replace.