Gerson 1940 R95 Particulate Respirator with Exhalation Valve – Flame Resistant, Made in USA (Box of 10)

The Gerson 1940 R95 Particulate Respirator is a NIOSH-approved, flame-resistant disposable respirator designed for welding, foundry, and metalworking environments where both oil-based aerosols and spark or heat exposure are operational factors. The R95 rating certifies ≥95% filtration against solid and liquid aerosols including oil mist. The double-shell construction protects filter media from compression and contamination throughout the workday. Each box contains 10 respirators.

Construction and Materials

The 1940 uses Gerson's double-shell molded cup design with a flame-resistant outer shell — a material specification that distinguishes it from standard R95 offerings. The oversized premium exhalation valve is engineered for low opening resistance, expelling warm exhaled air efficiently to reduce interior humidity. The double-shell geometry protects the electrostatically charged filter media from physical contact that would degrade charge and reduce filtration efficiency over time. Standard polymer head straps, latex-free and staple-free construction.

Compliance and Ratings

NIOSH approved under 42 CFR Part 84, R95 classification. Certifies ≥95% filtration efficiency against solid and liquid aerosols, including oil-based aerosols, for a time-limited use period. The flame-resistant outer shell addresses the specific hazard of spark contact during welding and torch cutting operations. Meets OSHA 29 CFR 1910.134 for applicable industrial environments.

Performance

The flame-resistant outer shell is the defining specification of the 1940 relative to the 1840 and other R95 designs. In welding environments where arc spatter or torch sparks may contact the mask, a flame-resistant outer layer reduces the ignition risk that could compromise the respirator mid-shift. The double-shell design further protects filter integrity in heavy particulate environments where physical contact with the filter would be a concern with a single-shell design.

Strengths

• Flame-resistant outer shell — specifically designed for welding and hot work environments
• R95 rating covers oil-based and non-oil-based aerosols
• Double-shell construction protects filter integrity in demanding industrial conditions
• Premium oversized valve reduces heat and moisture inside the mask
• Made in USA — Gerson's ISO 9001:2015 certified facility

Limitations

• R-series designation — time-limited for oil mist applications; P-series provides unlimited duration
• Exhalation valve means exhaled air is unfiltered — not for source-control applications
• No full foam gasket — the 1840 provides a more robust peripheral seal for varied facial profiles

Recommended Use Cases

The 1940 is the appropriate choice for welders, cutting operators, and foundry workers who encounter spark or heat exposure alongside oil mist and metal fume. The flame-resistant shell directly addresses a hazard that standard R95 masks do not. For heavy welding operations with significant face movement, the Gerson 1840 with full foam gasket and adjustable straps may provide a superior fit.

Verdict

The Gerson 1940 is the right R95 respirator for welding and hot-work environments where flame resistance is a genuine operational requirement. Buyers in oil-free industrial environments should evaluate whether R-series is needed at all — the N95 Gerson 1740 provides comparable comfort and filtration for non-oil applications at a lower specification cost.

FAQ

Why is the Gerson 1940 flame resistant when most disposable respirators are not?

Standard disposable respirator materials — polypropylene and related polymers — can melt or briefly ignite when contacted by arc spatter or torch sparks during welding operations. The 1940's flame-resistant outer shell reduces this hazard for workers in hot-work environments where mask contact with sparks is possible.

What is the R95 rating and how does it apply to welding?

R95 certifies ≥95% filtration efficiency against solid and liquid aerosols, including oil-based aerosols, for a time-limited period. Welding fumes contain metallic particles and may contain oil-based aerosols from lubricants on base metal, making R-series appropriate where N-series (non-oil only) is insufficient.

How does the Gerson 1940 compare to the 1840?

The 1940 adds a flame-resistant outer shell. The 1840 has a full foam gasket and heavy-duty adjustable straps that improve peripheral seal and fit. For spark hazard environments, specify the 1940. For environments prioritizing fit across varied facial profiles, specify the 1840.

How many units in a box and a case?

Each box contains 10 respirators. A standard case contains 10 boxes (100 units total).

Can the Gerson 1940 be used for paint spraying?

The 1940 filters oil-based aerosols at ≥95% efficiency. However, paint spraying also produces solvent vapors that a particulate-only respirator does not address. A combination organic vapor/particulate respirator is required for spray painting operations. The 1940 is appropriate for paint dust during sanding, not for spray application.