[TowerTalk] Testing a vacuum variable Cap for an Inv-L

[krishna kanakasapapathi]

  Hi all,
Greetings. I am in the process of building a 160m Inv-L and have
offered to purchase a 5Kv vacuum variable cap from another ham.
He has offered to make it good if the cap has lost the seal.

How do i test this one?
I have an antenna analyzer, but no Hi-pot test gear.
The Inv-L + radials are not ready as yet.

I am in the  Raleigh NC area. Any help would be appreciated.
73s
krish
w4vku