{"product_id":"gerson-1840-r95-particulate-respirator-valve-gasket-bag-5","title":"Gerson 1840 R95 Particulate Respirator with Valve, Full Gasket, Adjustable Straps (Bag of 5)","description":"\u003cp\u003eThe \u003cstrong\u003eGerson 1840 R95 Particulate Respirator\u003c\/strong\u003e is a NIOSH-approved, oil-resistant disposable mask designed for welding, grinding, foundry operations, and other industrial environments where oil-based aerosols are present. The R95 rating certifies ≥95% filtration efficiency against both oil-based and non-oil-based aerosols. A full foam inner gasket, premium oversized exhalation valve, and heavy-duty adjustable head straps complete a design built for demanding industrial wear. Each bag contains 5 respirators.\u003c\/p\u003e\n\n\u003ch2\u003eConstruction and Materials\u003c\/h2\u003e\n\u003cp\u003eThe 1840 uses a rigid molded cup with a full foam inner gasket — a continuous ring of foam that encircles the full face contact area of the mask. This gasket improves seal integrity on faces where a standard cup edge would not seal consistently, particularly during facial movement. The heavy-duty head straps are adjustable for a custom fit. The premium oversized exhalation valve expels warm exhaled air readily, reducing interior heat and moisture. Standard molded shell construction with staple-free assembly.\u003c\/p\u003e\n\n\u003ch2\u003eCompliance and Ratings\u003c\/h2\u003e\n\u003cp\u003eNIOSH approved under 42 CFR Part 84. R95 designation certifies ≥95% filtration efficiency against solid and liquid aerosols, including oil-based aerosols, for a time-limited use period as defined by the NIOSH test protocol. R-series respirators are approved for environments with oil mist present; use duration is subject to OSHA and manufacturer guidance on filter loading. Meets OSHA 29 CFR 1910.134 for applicable industrial environments.\u003c\/p\u003e\n\n\u003ch2\u003ePerformance\u003c\/h2\u003e\n\u003cp\u003eIn welding environments, the 1840's R95 rating captures metal fume particles and oil-containing aerosols that an N95 filter would not be rated to handle. The full foam gasket provides an improved peripheral seal compared to a hard-edge molded cup, reducing edge leakage during facial movement and on atypical facial profiles. The adjustable strap system allows the mask to be fitted to both larger and smaller head sizes without relying on fixed strap tension.\u003c\/p\u003e\n\n\u003ch2\u003eStrengths\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eR95 rating addresses both oil-based and non-oil-based aerosols — broader protection than N-series\u003c\/li\u003e\n  \u003cli\u003eFull foam inner gasket improves peripheral seal quality on varied facial profiles\u003c\/li\u003e\n  \u003cli\u003eHeavy-duty adjustable straps accommodate a wide range of head sizes\u003c\/li\u003e\n  \u003cli\u003ePremium oversized exhalation valve reduces heat buildup during high-exertion work\u003c\/li\u003e\n  \u003cli\u003eAppropriate for welding fume, grinding dust, and oil mist environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eLimitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eR-series (time-limited) designation — not for extended oil mist exposure; P-series provides unlimited-use oil resistance\u003c\/li\u003e\n  \u003cli\u003e5-per-bag format carries a higher per-unit cost than case purchasing\u003c\/li\u003e\n  \u003cli\u003eNo source-control capability due to exhalation valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Use Cases\u003c\/h2\u003e\n\u003cp\u003eThe 1840 is the correct choice for welders, metal grinders, foundry workers, and auto body technicians who encounter oil-containing aerosols alongside metallic fume and dust. The full gasket and adjustable straps make it particularly appropriate for crew environments with varied facial profiles, where a single-style respirator needs to fit a broad workforce.\u003c\/p\u003e\n\n\u003ch2\u003eVerdict\u003c\/h2\u003e\n\u003cp\u003eThe Gerson 1840 R95 is a well-specified industrial respirator for environments that require oil-aerosol coverage plus exhalation valve comfort. Buyers in environments with only non-oil particulates can save cost with the N95 \u003ca href=\"\/products\/gerson-1730-n95-particulate-respirator-box-20\"\u003eGerson 1730\u003c\/a\u003e. For unlimited-duration oil mist exposure, the \u003ca href=\"\/products\/gerson-2280-p100-particulate-respirator-box-5\"\u003eGerson 2280 P100\u003c\/a\u003e provides P-series (unlimited) certification.\u003c\/p\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat does the R95 rating mean on the Gerson 1840?\u003c\/h3\u003e\n\u003cp\u003eR-series NIOSH approval certifies ≥95% filtration efficiency against both solid and liquid aerosols, including oil-based aerosols. The \"R\" designates \"Resistant to oil\" — approved for use in oil mist environments for a limited period, as defined by NIOSH test protocol and manufacturer guidance.\u003c\/p\u003e\n\n\u003ch3\u003eCan the Gerson 1840 be used for welding fumes?\u003c\/h3\u003e\n\u003cp\u003eYes. Welding fumes consist of metallic particles, metal oxides, and may include oil-containing aerosols from lubricants on base metal. The 1840's R95 rating is appropriate for welding environments. For extended or repeated daily welding operations, consult your industrial hygienist to confirm whether R-series time limits are appropriate for the exposure duration.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is the purpose of the full foam gasket on the 1840?\u003c\/h3\u003e\n\u003cp\u003eThe full foam inner gasket surrounds the entire perimeter of the face contact area, improving the seal between the mask and face compared to a hard-molded cup edge. This is particularly beneficial for users whose facial profile doesn't seal reliably with a standard molded cup, and for high-movement tasks where the mask is more likely to shift.\u003c\/p\u003e\n\n\u003ch3\u003eHow many 1840 respirators are in a case?\u003c\/h3\u003e\n\u003cp\u003eEach bag contains 5 respirators. A standard case contains 20 bags (100 units total).\u003c\/p\u003e\n\n\u003ch3\u003eWhat is the difference between R95 and P100?\u003c\/h3\u003e\n\u003cp\u003eR95 provides ≥95% filtration and is approved for limited-duration use in oil mist environments. P100 provides ≥99.97% filtration and is approved for unlimited-duration use in oil mist environments. P-series respirators offer both higher filtration efficiency and broader time approval for oil-mist applications.\u003c\/p\u003e","brand":"Gerson","offers":[{"title":"Bag of 5","offer_id":44064886947928,"sku":"081840","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/1900\/0920\/files\/Gerson1840FrontBack-1Kpix-121012a.jpg?v=1777881783","url":"https:\/\/wcsafety.com\/products\/gerson-1840-r95-particulate-respirator-valve-gasket-bag-5","provider":"WC Safety","version":"1.0","type":"link"}