1840 R95 Respirator The low-profile design of the 1840 R95 Particulate Respirator allows it to fit easily under welding helmets, protecting from dust, mist and fumes in oil environments. The contoured adjustable nosepiece, straps and Sure-Fit™ face seal cushion, constructed of closed cell foam, offer excellent fit and comfort. The exhale valve keeps breathing easy and cool. Sold 5 per bag. Meets 42 CFR84 standard.