Tecnoseal R4 5 in Zinc Marine Rudder Anode

The Tecnoseal R4 rudder anode is a zinc sacrificial anode sized for direct protection of underwater rudder hardware. Its round body measures 5 in in outer diameter and 0.60 in high, giving the anode a defined contact footprint without adding unnecessary bulk around the rudder installation. The sacrificial metal is intended to corrode preferentially so more valuable submerged metal components are not the first parts attacked by galvanic corrosion.

This R4 weighs 3.10 lb and includes a stainless steel hex nut and socket cap screw for installation. A captive hex nut is built into the assembly, a useful detail when the anode is being fitted underwater or in another location where loose hardware is difficult to manage. The full-size rudder format makes this a direct service item for routine corrosion-protection maintenance. Browse more marine anodes.

• Captive hex nut helps keep mounting hardware controlled during underwater installation
• Includes a stainless steel hex nut and socket cap screw for installation
• Round body measures 5 in across and 0.60 in high
• Replaceable sacrificial design supports routine maintenance of submerged rudder hardware