The head / headband width: general head bandwidth, better comfort, because his head force area, will not produce pressure on the head;The width of the face fitting parts: the wider the fitting part, the better the sealing effect, so as to prevent the poisonous gas from being better;Overall appearance: smooth surface, not rough, so as not to cause damage to the skin;Breathing mouth design: breathing mouth vertical design is better than horizontal design, because down design, exhaust damp heat exhalation, does not affect the sight line, and the valve is not easy to pollution, easier to clean;Production process: one-time molding of gas masks, relative to the decomposition of the mask is more solid, longer service life;The mask material is easy to cause the body odor smell, shortness of breath, can cause serious respiratory disease or skin disease.
The traditional gas masks are made of rubber, which are easy to aging, and are sensitive to wear by a small number of sensitive skin. The sea solid gas mask is made of silica gel, which has better comfortableness, softer face, better anti oil property and less aging.
A half face mask protects only the nose and mouth area, while the full face covers the entire face. If the environment is splashing liquid or gas is irritating to the skin, so wear mask safer, with the most comprehensive cover long tube, air or oxygen bottle bottle collocation use, rarely equipped with cartridge (canister). If it is a normal gas shield, and no liquid splash, you can use a half mask, because half of the mask is relatively wide field of view, wider cover, wear more light.
