LOCTITE 243 Blue Medium Strength Threadlocker

Features and Benefits

LOCTITE 243 is a medium strength blue threadlocking adhesive that seals and secures metal nuts and bolts to prevent loosening due to shock and vibration.
LOCTITE® 243 is a general purpose threadlocker that provides a medium strength bond. LOCTITE 243 works on all metals, including passive substrates such as stainless steel, aluminum and plated surfaces. It is proven to be tolerant of minor contamination due to industrial oils, e.g., motor oils, corrosion prevention oils and cutting fluid.
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Technical Information

Agency Approvals / Specifications NSF P1 Reg No: 123000
Color Blue
Fixture Time 5.0 - 10.0 min.
Key Characteristics Thixotropic
Specific Gravity, @ 23.0 °C 1.08
Substrates Metal: Steel - Stainless Steel, Metal: Brass
Viscosity, Brookfield - RVT, @ 25.0 °C 2000.0 mPa·s (cP)
Viscosity, Cone & Plate, @ 25.0 °C Cone 35/2 @ 129 s⁻¹ 350.0 mPa·s (cP)


How to Secure Threaded Assemblies

Threaded assemblies are present in most machines. Learn how they work and how to get your threads secured with LOCTITE®XPLORE, our new e-learning platform for Assembly, Maintenance and Vehicle Repair professionals.