Scanstrut

Using marine-rated cable is a must for your boat's stereo system, but you also need watertight installation for your antenna and nav light cables. This Scanstrut cable seal is easy to install, impact-resistant, and looks great. It's designed for connectors up to 1.57" and cables from 0.47"-0.59". The base measures 2.6" (66mm) and there are three looks to choose from. With a tapered bung and a closed-cell base seal, these dome-shaped seals are rugged and water-resistant. Captive nuts make assembly easy and they can be used for repeat installations. The package includes pre-drilled and blank inner seals to make every installation easier. You can choose gray or white plastic, or opt for the durable, classic look of 316 stainless steel.