Loctite 290/50ml – Medium Strength Threadlock
Loctite 290 is a liquid medium/high-strength threadlocker designed for the locking and sealing of threaded fasteners. Because of its low viscosity and capillary action, the product wicks between engaged threads and eliminates the need for disassembly prior to application. The product cures when confined in the absence of air between close-fitting metal surfaces and prevents loosening and leakage due to shock and vibration. The product can also fill porosities in welds, castings and powdered metal parts.
Chemical Type: Dimethacrylate ester
Appearance (uncured): Green liquid
Fluorescence: Positive under UV light
Components: One component: Requires no mixing
Secondary Cure: Activator
Strength: Medium to High
Typical Curing Performance
Cure Speed vs. Substrate
The rate of cure will depend on the substrate used. The graph shown in the data sheet shows the shear strength developed with time on M10 steel nuts and bolts compared to different materials and tested according to ISO 10964.
Cure Speed vs. Bond Gap
The rate of cure will depend on the bondline gap. Gaps in threaded fasteners depends on thread type, quality and size. The graph shown in the data sheet shows shear strength developed with time on steel pins and collars at different controlled gaps and tested according to ISO 10123.
Cure Speed vs. Temperature
The rate of cure will depend on the temperature. The graph shown in the data sheet shows the breakaway strength developed with time at different temperatures on M10 steel nuts and bolts and tested according to ISO 10964.
Cure Speed vs. Activator
Where cure speed is unacceptably long, or large gaps are present, applying activator to the surface will improve cure speed. The graph shown in the data sheet shows the breakaway strength developed with time on M10 zinc dichromate steel nuts and bolts using Activator 7471 and 7649 and tested according to ISO 10964.
Typical Properties of Uncured Material
Specific Gravity @ 25°C: 1.08
Viscosity, Brookfield – RVT, 25°C, mPa·s (cP):
–Spindle 1, speed 50 rpm: 20 to 55
Typical Performance of Cured Material
After 24 hours @ 22°C
Breakaway Torque, ISO 10964:
M10 steel nuts and bolts: N·m 10 (lb.in.) (90)
Prevail Torque, ISO 10964:
M10 steel nuts and bolts: N·m 29 (lb.in.) (260)
Breakloose Torque, ISO 10964, Pre-torqued to 5 N·m:
M10 steel nuts and bolts: N·m 30 (lb.in.) (270)
Max. Prevail Torque, ISO 10964, Pre-torqued to 5 N·m:
M10 steel nuts and bolts: N·m 40 (lb.in.) (350)
Compressive Shear Strength, ISO 10123:
Steel pins and collars: N/mm² ≥5.4 (psi) (≥780)
Please store this product in the unopened container in a dry location.
Further storage information may be indicated on the product container labeling.
This product is not recommended for use in pure oxygen and/or oxygen rich systems and should not be selected as a sealant for chlorine or other strong oxidizing materials.
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£25.47Each (exc VAT)