5500 is the economic half mask. It keeps most of the features of 7700 and is made of
TPE material which reduces the using costs of users to the most without sacrificing
any protection ability.
• Can also be used with PAPR or supplied air respirators to fit different using environments.
• With specially designed oral/nasal cup to lessen”dead space” , avoid rebreathing
in of exhaled CO2 and reduce the working fatigue of wearers.
• Specially designed exhalation valve can vent the gases out from the mask to the
most so that the user can experience more wearing comfort
• Unique airtight curve of the inner mask offers 360°facial seal to fit various face
shapes. It also has different mask thickness on different position based on the
ideas of ergonomics design to ensure great fitness on the nose, chin and face.
• The head harness is positioned on the headand and also adjustable which can
make the donning easy and comfortable regardless of any movements of the user.
• The shape is downwards designed in order to avoid any effects on the vision and
also has a good compatibility with safety eyewear.