What tool is used to remove air bubbles from the sealant?

The correct tool used for removing air bubbles from sealant is actually most effectively addressed by a fairing tool. A fairing tool is designed to smoothly apply and shape sealant, and as part of that process, it can also help to displace and eliminate trapped air bubbles. When sealant is applied, bubbles can occur, impairing the integrity and effectiveness of the seal. The fairing tool helps to work the sealant into tight areas and can flatten or shape it, making it easier to identify and remove any undesirable air pockets.

Other tools listed, while they might have different specific applications in the sealing process, do not serve the primary function of removing air bubbles. For instance, an application tool typically refers to any device that assists in applying the sealant but is not specifically designed to address air bubbles.