Loctite LOC27743 Threadlocker Sealant 277 1 Liter

Product Description

The LOCTITE LOC27743 is a high-strength anaerobic threadlocker sealant sold in a 1-liter container. It is designed to lock and seal threaded fasteners, preventing loosening caused by vibration and leak paths caused by pressure or temperature cycling. Threadlockers in the 277 series are formulated for large-diameter fasteners and are commonly applied in mechanical, HVAC, plumbing, and industrial assembly work. Licensed mechanics and trade professionals use this product during equipment assembly, maintenance, and overhaul where permanent fastener retention is required.

This product is suited for use on large threaded fasteners typically found in heavy-duty mechanical assemblies, industrial equipment, and commercial HVAC or plumbing installations. The 1-liter size is appropriate for shop use or high-volume service operations where frequent application is expected. It performs on steel, stainless steel, and other metal substrates common to trade work.

Key Features

• High-strength 277 series formulation for permanent threadlocking on large fasteners
• Anaerobic cure — activates in the absence of air when confined between metal surfaces
• Resists loosening from vibration, thermal cycling, and pressure fluctuation
• 1-liter container suited for shop or high-volume field service use
• Compatible with steel, stainless steel, and common metal fastener materials

Compatibility

Designed for use on large-diameter threaded metal fasteners in mechanical, HVAC, plumbing, and industrial assembly applications where permanent retention is required.

Installation Notes

Application of threadlocker should be performed by qualified trade or mechanical professionals following the fastener manufacturer and equipment service documentation. Surfaces must be clean, dry, and free of oils or contaminants before applying sealant to ensure proper cure. Allow adequate cure time before applying load or returning the assembly to service. Consult applicable safety data sheets and local codes when working in confined or ventilated spaces.

Technical Specifications

• Series: 277 Threadlocker
• Container Size: 1 liter
• Unit of Measure: Each
• Minimum Order Quantity: 1
• UPC: 079340277437

Standard Information

• Brand: LOCTITE
• Manufacturer Part Number: LOC27743