AGO's subsea bulkhead and inline electrical connectors are standard "G" and "K" style waterproof sealed connectors. Applications include oceanographic instrumentation cables and cabling, video sewer inspection systems and video pipeline inspection systems. Products include metal shell bulkhead connectors, glass filled epoxy bulkhead connectors, rubber molded inline connectors, a new type 1.0/4 inline connector (industry standard wet-pluggable), and their WOC Series inline electrical connectors without cables.

Cooper offers their E.O./Electro WP Series of waterproof connectors in configurations such as male connector pin, female connector pin, attachable male plug, and attachable female plug. Also offered are single pin right angle and two pin universal underwater connectors, underwater penetrators, junction boxes with waterproof connections, and miniature connectors.

Souriau offers waterproof plastic connectors. The UTS Hi Seal Series is a dynamic IP68/69K waterproof connector in mated and unmated condition. The standard UTS Series is a dynamic IP68/69K with quick bayonet coupling. The Clipper is an IP68 rated environmentally sealed circular connector series.

SEACON manufactures a wide variety of waterproof, underwater connectors, including their Electrical Dry-Mate Series, their Optical Hybrid Dry-Mate Series, their Electrical Wet-Mate line, their Electrical Underwater Mateable connectors, and their Optical Underwater Mateable Series. They also offer underwater switches, penetrators, and specialty products.