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						respirator 
						Mask that filters out contaminated air; it covers the entire facial area to protect the nose, mouth and eyes.				                 
                
                
					
					
					
                    
                    
                    
                    
					
                    
					
					
    
                    
				 
										
						
						facepiece 
						
						Part of the mask that adheres to the face and prevents ambient air from entering. 						
						
						head harness 
						
						Straps that attach at the back of the head to secure the mask to the face. 						
						
						filter cover 
						
						Device that protects the cartridge filter. 						
						
						exhalation valve 
						
						Device that allows air to be expelled from the mask. 						
						
						inhalation valve 
						
						Device that allows air to enter the mask and prevents exhaled air from exiting through the air intake. 						
						
						cartridge 
						
						Device that filters out contaminated air by absorbing harmful substances. 						
						
						visor 
						
						Transparent part of the mask that allows the user to see.