Double seal for tri-lead style packer penetrators and method of installation

A packer penetrator seals each of a plurality of tubes within an enclosed penetrator body having a seal against the tubes and a seal against a seal bushing enclosing each of the plurality of the tubes. The method of installing this assembly whereby a manifold bushing is fed over the tubes and seated into the packer penetrator, then the penetrator is sealed using one or more rings with a top seal by tightening down a manifold bushing nut. Each tube is then sealed by passing it through the top seal and either sealed using a ferrule and nut seal or a top-hat and nut seal. Thus, each electrical conductor in the tube is sealed, and the packer penetrator is also sealed against the elements.