LOCTITE SF 7091 is a blue-green, solvent-free, low-temperature curing activator used for thread locking, pipe and thread sealing, gasketing and retaining anaerobic adhesives. It speeds up the curing of passive and inactive surfaces and is specifically formulated to ensure bonding integrity on hexavalent chromium substrate materials. This low-temperature curing activator is suitable for applications that involve larger bonding gaps.