During the sealing process, what is essential for ensuring a proper bond?

A proper bond during the sealing process is critically dependent on surface cleanliness. When surfaces are clean and free from contaminants such as dust, oil, moisture, or any other foreign materials, they allow the sealant to adhere effectively. Contaminants can create barriers that prevent the sealant from forming a strong bond, potentially leading to failures in sealing that can compromise the integrity of the assembly.

In contrast, excessive application of sealant may lead to issues such as improper curing or ability to properly fill gaps, while the use of heat could alter the properties of the sealant in ways that may not be beneficial for the bond. Additionally, low humidity can affect certain types of sealants, but it is not as universally critical as ensuring the surfaces are clean. Thus, maintaining cleanliness of the surfaces to be sealed is paramount in achieving a reliable and effective bond.