LOCTITE® 680 is a green, high strength, methacrylate ester acrylic liquid designed for the bonding of cylindrical fitting parts, particularly where low viscosity is required. The product prevents loosening and leakage from shock and vibration. It provides robust curing performance. It works on active metals (e.g. mild steel) and on passive substrates (e.g. stainless steel and plated surfaces).
- Low viscosity
- Certified to ANSI/NSF Standard 61 for use in commercial and residential potable water systems not exceeding +82 °C
- Cures when confined in the absence of air between close fitting metal surfaces
- Tolerates minor surface contaminations from various oils
- Offers high temperature performance and oil tolerance
- Provides robust curing performance
Technical Details
| Application method | Pressure, Dispense System, Manual |
| Agency approvals / certificates / specifications | NSF/ANSI 61 |
| Full cure time, @ 22.0 °C | 24.0 hr. |
| Fixture time | 4.0 min. |
| Technology | Acrylic |
| Physical form | Liquid |
| Recommended for use with | Metal |
| Key characteristics | Fluorescent, Oil Tolerant, Primerless, Strength: High Strength |
| Number of components | 1 Part |
| Cure type | Anaerobic Cure |
| Color | Green |
| Applications | For Loose Fitting Parts, For Slip Fitted Parts, Retaining |
| Specific gravity, @ 25.0 °C | 1.1 |
| Shear strength, Steel | 4000.0 psi |
| Viscosity, Brookfield – RVT, @ 25.0 °C Spindle 3, speed 20 rpm | 750.0 mPa·s (cP) – 1750.0 mPa·s (cP) |
| Viscosity, cone & plate, @ 25.0 °C Shear Rate 129 s?¹ | 650.0 mPa·s (cP) – 1850.0 mPa·s (cP) |
| Product Type | Retaining compounds,Industrial adhesives |
| Technology Names | Acrylates,Acrylates, anaerobic cure |
