A dispensing system for simultaneously dispensing a plurality of reactive materials. The system includes a multiple-barreled syringe having at least two barrels joined by a flange and containing respective different reactive materials. Parallel plungers joined by a flange force sealing members through the barrels to discharge the materials. A static mixer element having an applicator attaches to the syringe, and a means for re-sealing the syringe for subsequent use is provided. A sliding clip engaging a complementary shape removably fixes a loose static mixer element to the syringe, reducing the risk of misplacement and loss.