Steel beam connectors—whether anchoring main structural columns, joining purlins, or securing lateral bracing—are the lifeblood of structural engineering. These critical fasteners bear massive static and dynamic loads, including tension, shear, compression, and wind uplift. Any loosening compromises the structural integrity of the entire building or bridge, leading to catastrophic failure. This is a permanent, non-negotiable structural assembly demanding the highest level of security.

For the engineering and construction professional, securing these bolts is the ultimate act of structural reliability and liability mitigation.

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 monolithic, vibration-proof structure that maintains joint rigidity for the life of the structure.

The Problem: Dynamic Stress and Long-Term Integrity

Are your structural connections protected against these long-term threats?

• Cyclical Stress and Vibration: Structures are constantly subject to load variations, wind sway, and foundation vibration, all of which relentlessly attack the clamp load of the joint.
• Thermal Cycling: Large steel members expand and contract significantly with temperature swings, stretching fasteners and facilitating vibrational loosening over decades.
• Corrosion and Fretting: Environmental exposure can lead to rust and joint play, compromising long-term load-bearing capacity.

Only a permanent, high-strength anaerobic lock can eliminate the micro-movement that leads to structural fatigue and maintain the designed rigidity.

The Position: Permanent Structural Unity for Maximum Load

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 gaps, transforming the bolted connection into a single, unified component that withstands severe dynamic and static forces.

Here is the strategic defense the Re-Lok™ Red Series offers for steel beam connectors:

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

The High-Temperature and Thermal Stability Lock.

In large structures, fasteners endure significant thermal expansion and contraction. 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 clamp load is maintained despite continuous thermal cycling, which is a key threat to long-term structural integrity.

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

The High-Viscosity Structural Reinforcement.

The B77 (Extreme Duty) is engineered for maximum overall resistance to dynamic shear and large assemblies. Its high viscosity formulation ensures superior gap filling (critical for rough-cast or wide-tolerance steel connectors) for maximum structural support against the immense static and dynamic loads, providing the ultimate anti-vibration security.

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 structural safety and design longevity. You are guaranteeing the permanent security of the load-bearing connections, ensuring the structure maintains its intended rigidity for decades.