Coaxial Connector, Kings 10KV Jack, Bulkhead, 

Part Number: 10KV-8500-0000, 

Hermetic 1×10-6cc/sec of helium at 1atm,

With Round Contact (Φ1.8; L=3.4), 

JYEBAO DATASHEET-10KV-8500-0000

OTHER KV CONNECTORS-RFShopUK