Outboard engine bolts are subjected to one of the most hostile environments for any fastener: relentless, high-frequency engine vibration, severe torsional shock from propeller thrust, and constant, corrosive immersion in saltwater. The primary mounting and structural bolts are the ultimate link between the vessel and its power source. Failure leads to catastrophic loss of control, engine separation, and a life-threatening scenario on the water.
For the marine professional, securing these bolts is the ultimate act of vessel integrity and operational reliability.
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, corrosion-proof structure that survives the harshest marine service.
The Problem: Vibration Meets Corrosion
Are your outboard assemblies secured against these critical threats?
- Vibrational Loosening: High dynamic stress from the engine and rough water rapidly strips clamp load from standard fasteners.
- Saltwater Fretting: Constant exposure to saltwater penetrates thread gaps, causing rapid galvanic corrosion and fretting, which compromises the bolt’s strength and seal.
- Safety and Liability: Structural failure on the water carries maximum safety and liability risk.
Only a permanent, high-strength anaerobic lock can eliminate internal micro-movement and simultaneously guarantee a chemical 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 structural joint into a single, unified, and sealed component.
Here is the strategic defense the Re-Lok™ Red Series offers for outboard engine bolts:
1. INCURE Re-Lok™ B72 Red Threadlocking Adhesive – Heavy Duty
The High-Temperature and Anti-Fatigue Lock.
Outboard engines generate significant operational 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. This guarantees the critical structural bond remains intact despite continuous 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 engineered for maximum overall resistance to dynamic shear and chemical degradation. 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 and corrosive cleaning agents, preserving the thread’s long-term strength and integrity.
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 marine safety and structural permanence. You are guaranteeing the security of your engine, eliminating the primary failure mode caused by vibration and corrosion in a saltwater environment.