Which tool is used to apply sealant to the ground stud assembly?

The tool that is best suited for applying sealant to the ground stud assembly is a brush. Using a brush allows for precise application, making it easier to control the amount of sealant being used and ensuring even coverage. This method is particularly beneficial for fitting into tight or intricate areas of the assembly, where accuracy is crucial to achieving a proper seal.

A brush can effectively spread the sealant into any corners or crevices, enhancing the seal's effectiveness and preventing leaks. Furthermore, brushes are designed to handle a variety of sealant viscosities, making them versatile for different tasks related to assembly mechanics.

While other tools like a spray gun can provide a more even and quick application over larger surfaces, they may not afford the same level of precision in tight areas. Squeegees and rollers are typically more effective for smooth, flat surfaces and may not achieve the necessary detail required for ground stud applications.