High strength, methacrylate ester acrylic liquid designed for the bonding of cylindrical fitting parts, particularly where low viscosity is required.
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
- -Provides robust curing performance
- -Cures when confined in the absence of air between close fitting metal surfaces
- -Offers high temperature performance and oil tolerance
- -Tolerates minor surface contaminations from various oils
- -Certified to ANSI/NSF Standard 61 for use in commercial and residential potable water systems not exceeding +179.6 °F (+82 °C)
Technical Information
| Agency Approvals / Specifications | CFIA Listed, NSF/ANSI 61 |
| Application Method | Pressure |
| Applications | For Loose Fitting Parts, For Slip Fitted Parts, Retaining |
| Color | Green |
| Cure Type | Anaerobic Cure |
| Diametrical Clearance (Maximum) Unit | in. |
| Fixture Time | 4 min. |
| Fixture Time Temperature | 4 °C |
| Full Cure Temperature | 22 °C |
| Full Cure Time | 24 hr. |
| Gap Fill | 0.015 in. |
| Key Characteristics | Fluorescent, Oil Tolerant, Primerless, Strength: High Strength |
| Number of Components | 1 Part |
| Physical Form | Liquid |
| Shear Strength Unit, Steel | psi |
| Shear Strength, Steel | 4000 |
| Specific Gravity | 1.1 g/l |
| Specific Gravity Temperature | 25 °C |
| Substrates | Metal |
| Technology | Acrylic |
| Temperature | -65 - 300 °F |
| Viscosity | 1250 mPa.s (cP) Brookfield |
| Viscosity (#7sp/20/rpm) | 1250 mPa.s (cP) Brookfield |
| Viscosity Temperature | 25 °C |
US 1600 
MY 386 
CN 252 
AP 204 
AU 77 
CA 73 
GB 60 
DE 60 
