Crack filling which can include block, longitudinal, or diagonal cracks, doesn't move due to the close spacing between the edges. If the pavement isn't showing too much movement, then filling is the recommended technique. Deeper and wider cracks also need filling because it's a more permanent and durable solution. The crack filling equipment needed is also minimal in comparison to sealing a shovel, a tamper, pressurized air, and the patch mix are generally enough to fill holes and cracks. The Crack sealing equipment such as tanks, melt pots, and torches are needed for the job, depending on your level of skill. Sealing involves cleaning out the crack and injecting hot sealant into or above the crack. The purpose is to seal the crack so that water doesn't get into the crack and the subgrade.