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LOCTITE® 680 is a green, high-strength, anaerobic-curing retaining compound for the assembly and attachment of cylindrical fitting parts, particularly where low viscosity is required. The product prevents loosening and leakage from shock and vibration, and provides robust curing performance by curing on both active metals (e.g. mild steel) and passive substrates (e.g. stainless steel and plated surfaces), as well as slightly oiled or contaminated surfaces, without the need for a primer or cleaner.
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Product category: Retaining compounds
Technologies: Acrylates, anaerobic cure
Agency approvals / certificates / specifications: NSF/ANSI-norm 61
Application method: Dispense system; Manual; Pressure
Applications: For loose fitting parts; For slip fitted parts; Retaining
Color: Green
Cure type: Anaerobic cure
Fixture time: 4.0 min.
Full cure time, @ 22.0 °C: 24.0 hr.
Key characteristics: Fluorescent; Oil tolerant; Primerless; Strength: high strength
Number of components: 1 part
Physical form: Liquid
Recommended for use with: Metal
Shear strength, Steel: 4000.0 psi
Specific gravity, @ 25.0 °C: 1.1
Viscosity, Brookfield - RVT, @ 25.0 °C: 750.0 mPa·s (cP) - 1750.0 mPa·s (cP)
Viscosity, cone & plate, @ 25.0 °C: 650.0 mPa·s (cP) - 1850.0 mPa·s (cP)
NSF/ANSI 61 certified up to 82°C (179.6°F)