N95 Valved Respirator with Gasket. The dust masks feature a comfortable tight sealing gasket creating a secure seal on your face for all-day comfort. The respirator valve reduces the temperature by 10 degree F keeping you cool while at work. MILWAUKEE masks feature two soft adjustable straps and a flexible nose bridge allowing you to achieve a better fit. The respirator masks are ideal for non-harmful sanding, grinding, sawing, and insulation particles.