Pothead cable seal for electric submersible motors

An electric submersible motor pothead system comprising:

• a pothead forming an electrical connector engaged with an electric submersible motor, the pothead comprising a plurality of power cable phases extending through the pothead;
• a finger seal extending around the plurality of power cable phases inside the pothead, the finger seal comprising:
• a finger extending axially and around each power cable phase extending through the finger,
• a protruding rib extending around each finger, and
• a radially extending flange extending around a bottom of the fingers;
• the finger seal compressed between:
• a compression plate below the radially extending flange, and
• a seal seat above the radially extending flange and comprising a socket that surrounds and receives each finger;
• the sockets of the seal seat each having a flared inner diameter extending around each finger, the flared inner diameter contacting the protruding ribs and forming a space between each finger and the flared inner diameter of the seal seat;
• a seal ring secured around each finger below the protruding rib;
• and
• the seal ring closing the space between the finger and the flared inner diameter of the seal seat.

A pothead for electrically connecting a power cable to an electric submersible motor, the pothead comprising:

• an insulating block comprising a plurality of openings;
• a finger seal comprising a finger extending through each opening of the plurality of openings,
• each opening comprising a tapered inner diameter facing the finger extending through the opening,
• each finger comprising at least one rib extending circumferentially around the finger and contacting the tapered inner diameter;
• and
• a phase of the power cable extending through each finger.