The clear motor lid is offered on the
HDPE version. This lid is bonded to its spacer ring, and has both
barrel seal and a face seal o-rings. There is no stress anywhere in
or on this lid. The connectors are threaded through and have a
silicone seal under them. None of the motor lids has ever leaked in
13 years of using this technique, and fittings do not require any
servicing. The large fittings have a hex shape to accommodate a
wrench for holding them while tightening the nuts on the other side
at installation, and the small fittings have a corrugation for the
same reason. The relay board is double-sided and
through-plated.
