Blue Sea Systems CableClam Waterproof Cable Pass Through - Clean Deck

In this review the Blue Sea Systems CableClam is evaluated as a practical deck fitting for anyone needing a tidy, watertight pass through for antenna or transducer cables. The single biggest reason to buy is its combination of a true watertight rubber seal with a polished 316 stainless steel dress cap that conceals fasteners and resists UV, making it ideal when a neat, durable exterior finish and reliable water resistance are priorities.

Key Features

• Waterproof pass through: Keeps water out while allowing cables to pass through without removing connectors, preserving cable terminations and saving installation time.
• Pre-drilled and slit rubber seals: Slits and pre-drilled holes let installers feed cables and connectors easily while maintaining a snug, water-resistant fit.
• Polished 316 stainless steel dress cap: Conceals mounting hardware and provides long-term protection from UV and saltwater exposure for a clean appearance.
• Includes stainless steel fasteners: Comes with corrosion-resistant fasteners so the fitting is ready to mount and matched for marine conditions.
• Commonly used for antennas: Sized and shaped for antenna installations, it works well with coax, transducer leads and similar wires.

Who It's For

The CableClam is for boat owners, marine technicians, and DIY installers who need a reliable, watertight cable pass through that does not require removing connectors. It fits well for antenna installs, Starlink-style cables, transducer wires and other applications where a sealed deck or bulkhead penetration and a neat exterior finish matter.

It is less appropriate for users who need a multi-cable bulkhead plate with many entries or for installations that require custom-sized glands; in those cases a larger multi-port solution may be a better fit.

Pros & Cons

Pros

• Quality construction offers a tidy, durable seal that customers report keeps water out effectively.
• Easy installation with pre-drilled and slit rubber seals reduces the need to cut or alter cables and connectors.
• Polished 316 stainless dress cap gives a finished look and added UV and corrosion protection.

Cons

• Designed for single pass through use, so it is not a substitute for larger multi-cable bulkhead plates.

Specifications

Product	Waterproof cable pass through
Primary use	Antenna and transducer cable installations
Seal type	Pre-drilled and slit rubber seals
Dress cap	Polished 316 stainless steel
Fasteners	Included stainless steel fasteners
Installation benefit	Pass through without removing connectors

Our Verdict

The Blue Sea Systems CableClam is a compact, well-built solution for anyone needing a single watertight cable pass through with a clean external finish. It is good value for marine installs where preserving connectors and preventing water ingress are priorities, and the stainless dress cap and included fasteners mean a finish-ready mount that holds up in harsh environments.

Frequently Asked Questions

Can the CableClam be installed without removing cable connectors?
Yes, the design and slit rubber seals allow many cables and connectors to be fed through without removal.

Is the dress cap corrosion resistant?
Yes, the polished 316 stainless steel dress cap is chosen for corrosion and UV resistance in marine use.

Does it include mounting hardware?
Yes, stainless steel fasteners are included so the unit is ready to mount.