M10 Cable Penetrator for Fathom Slim Tether


This cable penetrator is designed for 3-4mm diameter cables and makes a waterproof, high-pressure seal to pass the thruster cable into a water-tight enclosure. Each set includes a bolt, nut, and o-ring. Some assembly required.

In stock

HS Code: 7616.10.7030

Product Description

This cable penetrator is a simple solution to waterproofing your robot. It’s basically a bolt with a hole that the a cable can be glued into to provide a waterproof connection through water-tight enclosures, boxes, panels, etc. This 3mm size is intended for smaller cables like the Fathom Slim ROV Tether. We primarily recommend the WetLink Thixotropic Potting Compound, which can be applied in one step and provides a depth rating up to 1000 meters. Alternatively, we recommend Loctite Marine Epoxy and the Potting Kit to complete assembly.


  • Anodized aluminum construction for corrosion resistance and high strength
  • Captive O-ring face seal that works on any smooth surface
  • Wrench flats for easy tightening
  • Multiple inner diameters to secure the cable jacket but leave room for potting compound


  • 1 x Cable Penetrator Bolt for Fathom Slim Tether
  • 1 x Cable Penetrator Nut
  • 1 x O-Ring


MaterialAluminum 6061-T6
Recommended Through-Hole Diameter10 mm
Bolt ThreadingM10 x 1.5
Bolt Length25 mm 0.98 in
Bolt Head/Nut Diameter18 mm 0.71 in
Wrench Flats16 mm 5/8 in
O-ringNBR70 AS568-013

3D Models

PENETRATOR-M-BOLT-5MM-3ID-10-25-R1 (.zip)

PENETRATOR-M-NUT-10-8-R2 (.zip)

Revision History

22 May 2019

  • R1 – Initial release


Cable Penetrator Potting Instructions

WTE Assembly Instructions


Blue Robotics Forums – Potting

Blue Robotics Forums – Watertight Enclosures