What type of cleaning motion is required when using a solvent on a surface prior to cap sealing?

The appropriate cleaning motion when using a solvent on a surface prior to cap sealing is wiping. This technique is essential because it allows for the effective removal of contaminants, oils, or debris from the surface, ensuring a clean and smooth area for sealing. Wiping uses a controlled motion, which minimizes the risk of damage to the surface or introduction of additional contaminants, making it ideal for preparing surfaces for a sealant application.

Using a wiping motion helps to evenly distribute the solvent over the surface, enhancing the cleaning effect. It also allows for better control over how much pressure is applied, which is important to maintain the integrity of the underlying material. For instance, scrubbing might induce unnecessary wear or scratches, while swiping can miss spots or leave residues, and twisting could lead to uneven application or even surface damage. Thus, wiping is the preferred technique for ensuring the surface is adequately prepared for cap sealing.