What is one way to improve facial seal on an SCBA facepiece?

To achieve an effective facial seal with an SCBA facepiece, it is crucial to ensure that there is no obstruction between the face and the mask. Facial hair can prevent the mask from making a complete seal around the edges, allowing contaminated air to leak in. Therefore, removing facial hair is essential for maintaining an airtight fit, which is vital for the safety of the user in a hazardous environment.

Using thicker mask padding may seem like it could improve comfort, but it does not necessarily enhance the seal. Similarly, wearing a larger size mask could actually worsen the seal, as it may not conform properly to the contours of the face. While adjusting straps is important for fit, maximum tightness can create discomfort and does not guarantee an effective seal if other factors, like facial hair, are not addressed. Removing facial hair directly targets the primary concern of achieving a solid seal, making it the most effective strategy in this context.