Barton Marine ClamSeal [60001]ClamSeal The ClamSeal can instantly repair splits and tears up to 3. 5" (90mm) in length without using any hand tools or adhesives. ClamSeal is a glueless repair system that instantly repairs small tears or splits in inflatables above or below the waterline, regardless of the fact that the material may be wet. The system works by using two half 'shells' that screw together tightly, using the inflatable material itself as a water and air tight seal. It