Identify hose

[Craig3181]

Hi I've just found a hose spraying fluid over the engine bay and I'm trying to ide tidy the hose or a part number,it's the one I'm pointing to,if I can't find a replacement hose am I OK to fix it with silicon tape as a temporary measure,got a busy few days on I need the car for,thanks

[Craig3181]

It's a 1.9tdi 

[Volkswagen Owners Club]

It looks like the vacuum hose from the Brake Exhauster which is driven from the engine.

It would be quite vital to get this sorted as soon as possible.
Looks like there are some other hoses that have some chaffing wear on them as well