Gap filling medium. 5-10 second glue. Cyanoacrylate. Remove top and take out inner seal. Replace top. Twist cap 180 degrees to open, then gently squeeze CA glue into a smaller bottle. Close cap. Using the smaller bottle, apply Insta-Cure+ to one surface, then hold parts tightly together for 5-10 seconds. Store 8 ounce bottle in refrigerator to ensure longest shelf life.