Loctite Abro High-Strength Anaerobic Retainer

This product represents a genuine Loctite Abro formulation, engineered for robust industrial applications requiring secure component retention. It delivers dependable performance, ensuring operational integrity across critical mechanical assemblies. The specialized chemistry provides a solution for maintaining precise alignment and preventing relative movement between mating cylindrical parts, critical for sustained mechanical function. Its anaerobic curing mechanism activates in the absence of air and in contact with metal, forming a thermoset plastic that locks components rigidly into position and seals against leakage.

Technical Specifications

• Viscosity: 100-200 cP (centipoise) at 25°C per ASTM D1084.
• Shear Strength: Exceeds 25 N/mm² on steel after a 24-hour cure at 22°C (72°F).
• Gap Filling Capability: Effectively fills radial clearances up to 0.15 mm (0.006 inches).
• Temperature Resistance: Operates reliably from -55°C to 150°C (-65°F to 300°F).
• Cure Speed: Achieves fixture strength within 10 minutes on steel; full cure is attained in 24 hours.
• Chemical Base: Formulated with a methacrylate ester.
• Flash Point: >93°C (>200°F).
• Specific Gravity: 1.05 at 25°C.
• Pack Size: Available in standard industrial volumes, including 50ml and 250ml bottles.

Compatibility & Fitment

• Designed for permanent retention of cylindrical assemblies in high-stress power transmission systems, including gears on shafts.
• Applicable for securing bearings, bushings, and splines within housings or onto shafts.
• Suitable for press-fit and slip-fit components where high resistance to dynamic loads, vibration, and shock is required.
• Compatible with various metal substrates including steel, brass, and copper.
• Utilized extensively in industrial machinery such as gearboxes, electric motors, and hydraulic pumps.
• Effective on both active and inactive metal surfaces; accelerator use may be beneficial.
• Facilitates assembly of components with wider tolerances.
• Prevents relative movement between parts.

Key Performance Benefits

• Prevents loosening and leakage caused by severe shock and vibration.
• Ensures consistent clamping load in assemblies.
• Facilitates uniform stress distribution across mating surfaces.
• Offers robust corrosion protection for assembled parts.
• Eliminates the need for costly mechanical fastening methods such as keys or splines.
• Simplifies assembly processes and permits wider manufacturing tolerances.
• Provides 100% surface-to-surface contact, enhancing load transmission capacity.
• Enhances overall reliability and operational lifespan.
• Reduces maintenance requirements.

Authenticity Guarantee

We certify this Loctite Abro product as an authentic, factory-direct industrial solution. Manufactured to rigorous quality standards, it aligns precisely with specified performance metrics. Each unit undergoes strict validation protocols, guaranteeing its chemical composition. Our commitment ensures consistent batch-to-batch quality. This product complies with all relevant industry specifications.

This Loctite Abro retainer is an essential component for critical engineering applications demanding unwavering reliability, enhanced structural integrity, and maximized operational efficiency.