Examples of these conditions include beards or sideburns that interfere with the facepiece seal or valve function, certain dentures or dental conditions, facial deformities (e.g., scars, deep skin creases, prominent cheekbones), or the use of jewelry or headgear that projects under and interferes with the facepiece seal. General Safety Orientation Forklift Safety Training Respiratory Protection Training Confined Space Entry Training Hazard Communications Training HAZWOPER Awareness Training Lock-Out/Tag-Out Training.