Handi-Foam® Sealants are designed to seal and fill small cracks, gaps and voids. Handi-Foam sealants can be applied with a straw applicator, a professional dispensing unit or a professional hose kit (for use with cylinders). Handi-Foam Sealants are available in a variety of sizes to meet many application needs. This results in less waste on small jobs while having an economic impact on large jobs.