What is an alternative method of applying sealant besides using a brush?

Using a gun applicator is a common alternative method for applying sealant, especially in aerospace applications where precision and control are critical. This method allows for a consistent bead of sealant to be applied in a uniform manner, which is essential for ensuring proper sealing and adhesion. The use of a gun applicator often results in less waste of sealant and can be more efficient in terms of time and effort, particularly when covering larger areas or when working in tight spaces where a brush may not be as effective.

In aerospace assembly, achieving an air-tight and water-tight seal is paramount, and the gun applicator facilitates this by enabling the mechanic to control the flow and thickness of the sealant being applied. This tool is particularly advantageous when dealing with high-viscosity materials that may be difficult to spread evenly with a brush or spatula.

The other methods, such as a brush, while effective in certain scenarios, may not provide the same level of control and efficiency as a gun applicator. A spatula could also be used, but likewise, does not offer the precision and ease of use that a gun applicator provides. Thus, the gun applicator stands out as the preferred alternative for sealant application in the aerospace industry.