The moldex classic series ffp1 nr d valved masks are durable and comfortable this dual purpose mask is ideally suited to most industrial applications the loop strap makes putting the mask on and taking it off very easy the activ form seal automatically adjusts to different face shapes and sizes with no need for metal nose clips ffp1 nr d for protection against non toxic dusts mists and fumes based on water and oil4 x workplace exposure limit en1492001 43 a12009 supplied as a pack of 20