Only as good as person replacing them? Wow what a comment.

Weve had issues with these regardless of who installed them. Only luck we have seemed to have is when using a Gorman packing.

A theory was the Gorman seems to slightly redesign the seal and omit the flat rubber that sits on top on seal (or bottom because we are upside down)

The idea is this redesign allows oil in make it into the seal ports better and expand the seal properly.