Vibra-TITE Excel 623 General Purpose Accelerator is an ozone friendly accelerator used for normal curing of cyanoacrylates and to prepare the surface for bonding. Excel 623 is also designed to provide a fast cure of thick deposits of SuperGlues or for post curing excess adhesive outside of the bond line. Vibra-TITE Excel 623 Accelerator prevents absorption of the lower viscosity SuperGlues into porous items. This product can also be used for fillet curing or for wire tacking jobs. Product is normally hand applied from the bottle by brushing, wiping or spraying onto parts. Excel 623Accelerator is an ozone friendly blend of flammable solvents. Care must be taken to avoid flames. Shelf Life is 12 months at 68 degree F unopened. High flammability. Cure speed is dependent on the adhesives viscosity, with the lower viscosity SuperGlues curing faster and the gels slower. Store in cool area out of direct sunlight. 1 gallon Can.