Which is better? Delrin or Teflon?

Do Chinese sellers of connectors know their stuff?

Some connectors are made to me tightened with a specific torque spec and some are hand tighten only.

They are good, it used to be one of the best because there were few connector manufacturers. And a lot of Amphenol is now made on a China Line.

Loral RF Coaxial Switch Power Diagram

How many of us have really done this? Myself included ...

In a word, no.

Surge Protector Gas Tube Wattage Ratings - Wattage vs Gas Tube Voltage At HF

Or why we don't publish specs ...