Rudder post fittings are the critical structural connection that determines vessel steering and control. They operate under massive, cyclical forces: high torsional stress during hard steering maneuvers, severe lateral shock from waves and wakes, and continuous exposure to corrosive saltwater. Failure of these fittings means an immediate, catastrophic loss of directional control and severe danger on the water. This demands an absolute, High Strength, Permanent lock.

For the marine professional, securing these bolts is the ultimate act of vessel control and safety assurance.

This is the non-negotiable territory of the INCURE Re-Lok™ Red Series—featuring the B72 Heavy Duty and B77 Extreme Duty Threadlocking Adhesives. They are engineered to create a unified, shock-resistant structure that guarantees the rudder’s mechanical integrity.

The Problem: Torsional Forces and Saltwater Corrosion

Are your rudder fittings secured against these critical threats?

• Torsional Failure: Aggressive steering and prop wash constantly attempt to unseat the bolts, leading to rudder play and loss of response.
• Saltwater Corrosion: Perpetual immersion or exposure to saltwater accelerates corrosion and fretting, weakening the joint and the threads.
• Safety Risk: Loss of steering control is an immediate and major safety hazard.

Only a permanent, high-strength anaerobic lock can eliminate micro-movement and simultaneously guarantee a robust seal against the aggressive marine environment.

The Position: Permanent Security and Maximum Chemical Resistance

The INCURE Re-Lok™ Red Series is the defined solution for permanent, high-strength applications where structural failure is unthinkable. By curing into a durable thermoset plastic, the threadlocker completely fills all microscopic voids, transforming the post fitting into a single, unified, and sealed component.

Here is the strategic defense the Re-Lok™ Red Series offers for rudder post fittings:

1. INCURE Re-Lok™ B72 Red Threadlocking Adhesive – Heavy Duty

The High-Temperature and Anti-Fatigue Lock. 

High-performance systems can generate significant heat. The B72 (Heavy Duty) is essential for its ability to maintain its permanent, high-strength lock under extreme operating temperatures up to 230∘C, ensuring the structural bond remains intact despite thermal and vibrational stress.

2. INCURE Re-Lok™ B77 Red Threadlocking Adhesive – Extreme Duty

The High-Viscosity and Saltwater Fortress. 

The B77 (Extreme Duty) is the definitive choice for the harsh marine environment. Its high viscosity formulation ensures superior gap filling for maximum resistance against torsional shock, while its excellent chemical resistance creates an impenetrable, permanent seal against saltwater, protecting the threads from corrosion and seizure.

The Strategic Payoff ⚓

By investing in the targeted, high-performance security of the INCURE Re-Lok™ Red Series, you are making a non-negotiable commitment to vessel control and structural permanence. You are eliminating the primary failure mode caused by torque and corrosion in a safety-critical assembly.