LOCTITE® 680™ is designed for the bonding of cylindrical fitting parts, particularly where low viscosity is required. The product cures when confined in the absence of air between close fitting metal surfaces and prevents loosening and leakage from shock and vibration. LOCTITE® 680™ provides robust curing performance. It not only works on active metals (e.g. mild steel) but also on passive substrates such as stainless steel and plated surfaces. The product offers high temperature performance and oil tolerance. It tolerates minor surface contaminations from various oils, such as cutting, lubrication, anti-corrosion and protection fluids.
FEATURES AND BENEFITS
Prevents loosening: It fills all gaps between the cylindrical components and cures into a hard thermoset plastic. This unitizes the assembly and prevents loosening and leakage from shock and vibration.
Robust curing on various metal substrates even in the presence of minor surface contamination.
Oil tolerant.
APPLICATION
Retaining
PRODUCT CHARACTERISTICS
Specific Gravity @ 25 °C
1.1
Flash Point – See SDS
Viscosity, Brookfield – RVT, 25 °C, mPa·s (cP)
Spindle 3, speed 20 rpm, 750 to 1,750LMS
Viscosity, Cone & Plate, 25 °C, mPa·s (cP)
Shear rate 129 s -1
650 to 1850
TYPICAL PROPERTIES OF UNCURED MATERIAL
Specific Gravity @ 25 °C
1.1
Flash Point – See SDS
Viscosity, Brookfield – RVT, 25 °C, mPa·s (cP)
Spindle 3, speed 20 rpm, 750 to 1,750LMS
Viscosity, Cone & Plate, 25 °C, mPa·s (cP)
Shear rate 129 s -1
650 to 1850
TYPICAL PROPERTIES OF CURED MATERIAL
Physical Properties:
Coefficient of Thermal Expansion, ISO 11359-2, K ^-1
