Chromed Thru Hull (Above Waterline) Plastic 29 mm 1 1/8"

Function and technical context

A thru-hull is the element that allows you to pass through the hull of a boat in a sealed manner to provide exit or entry to pipes, cables or fluid conduits. This model, made of chrome-plated plastic, is specifically designed for installations above the waterline, which means that it works in areas of the hull that are not permanently submerged and, therefore, does not support the continuous hydrostatic pressure typical of below-deck thru-hulls. The chrome version provides resistance to environmental corrosion and an aesthetic finish in accordance with nautical standards, and is commonly used in ventilation outlets, deck drains, exterior electrical conduits or pipes for auxiliary systems. With a nominal measurement of 29 mm (1 1/8"), it is compatible with pipes and hoses of that internal diameter, and its correct installation guarantees the tightness of the hull, avoiding leaks that compromise the safety of the boat.

When to replace this part?

Chrome-plated plastic thru-hulls installed above the waterline can degrade due to continued exposure to UV rays, temperature cycles and marine ambient humidity, manifesting as microcracks in the plastic body, loss of the chrome finish with the appearance of surface corrosion or excessive play in the fit with the connected hose or pipe. It is recommended to visually inspect this component at each seasonal maintenance, paying special attention to the integrity of the body, the seal and the tightness of the locknut. Replacing a cracked or poorly sealed thru-hull preventively prevents unexpected leaks that, even if they occur on the flotation, can lead to damage to internal hull structures or adjacent electrical installations.

Compatibility table