For hundreds of years, we have used valves below the water line of our boats and more often we sadly neglect the maintenance of them due to the time and expense involved.

Appearances can be deceptive, and what we perceive to be a clean and effective seacock could be a dangerously corroded accident waiting to happen.

Underwater fitting failure is responsible for 50% of moored boat sinkage. Such a small piece of kit as a seacock or hose can be responsible for huge amount of damage: even if a vessel has only been submerged for a short period of time the cost of repair is usually 40% of the value of the boat.

Using hi-tech materials and a revolutionary design Seabung introduces a quick and simple way to schedule in, what should be, a routine check on this critical piece of equipment.

Seabung is also an essential emergency device, outperforming the traditional wooden plug in speed, ease of use and permanence of application.

With regular checking, keep your boat safe and don’t let your seacocks become the issue.

Seabung is proudly designed and manufactured in England.

Each pack of Seabung is supplied in diameters of 60 and 90mm for use on holes 19 to 52mm.



Seabung’s unique flexible dome fits easily through a seacock or damaged area before pinging back into shape and stemming the flow of water.


Seabung’s flexible, elastomeric TPU outer with tough ABS plastic core provides ultimate strength and flexibility.


Seabung is supplied in packs of two which fit holes 19–32mm and 25–52mm equipping you to use with a variety of skin fittings.


Seabung’s tough moulded eyelet allows it to be tethered in place in emergency situations, when an immediate repair is not possible.

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