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SAS Safety 8641 P100 Valved Particulate Respirator — 2-Pack
Short answer: the sas safety 8641 p100 valved particulate respirator is covered below on the specifications its own listing publishes, the standards it is certified to, and who it suits. WC Safety Editorial Pick — SA...
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Short answer: the sas safety 8641 p100 valved particulate respirator is covered below on the specifications its own listing publishes, the standards it is certified to, and who it suits.
WC Safety Editorial Pick — SAS Safety 8641 P100 — 99.97% oil-proof valved disposable respirator for maximum hazard environments. Read our full review → | Browse all SAS Safety disposable respirators →
SAS Safety 8641 P100 Valved Particulate Respirator — 2-Pack — NIOSH-Approved P100 Disposable Respirator
An air-purifying respirator filters air, it does not supply any. Under 29 CFR 1910.134 no air-purifying respirator may be worn in an atmosphere that is IDLH or oxygen-deficient (below 19.5% oxygen). Those conditions require a supplied-air respirator or an SCBA, and no filter or cartridge rating changes that.
SAS Safety 8641 P100 Valved Particulate Respirator — 2-Pack is SAS Safety's NIOSH P100 disposable respirator with exhalation valve — the highest oil-proof filtration class in the disposable category at 99.97% efficiency, with a valve for cooler wear during lead abatement, asbestos work, or other maximum-hazard applications in the SAS Safety lineup.
Jump to: Key Features · Specs · Hazard Coverage · Compare · FAQ
The SAS Safety 8641 P100 Valved Particulate Respirator — 2-Pack is a NIOSH-approved P100 filtering facepiece respirator from SAS Safety, listed on the NIOSH Certified Equipment List. Read the complete disposable respirator guide to compare NIOSH filter classes before ordering.
Key Features — 8641
- NIOSH P100 approval — minimum 99.97% oil-proof filtration: the highest disposable class
- Exhalation valve routes hot exhaled air out of the mask during demanding P100 operations
- Cup design maintains shape and filter integrity in heavy-hazard environments
- Dual elastic headbands and adjustable nose clip for a consistent high-hazard seal
- 2-pack — appropriate for P100-level unit cost and limited-program use
Pros
- P100 oil-proof 99.97% — maximum disposable protection
- Valve for cooler wear in P100 applications
- NIOSH P100 verified
Cons
- 2-pack — small quantity; order multiple for crew use
- Valve prevents source-control use
- Highest per-unit cost in SAS N95/R95/P100 line
Specifications
| Specification | Detail |
|---|---|
| Brand | SAS Safety |
| Model | 8641 |
| NIOSH Class | P100 |
| Exhalation Valve | Yes — exhalation valve |
| Nuisance Relief | None |
| Shell Shape | Cup |
| Headstraps | Dual elastic |
| Pack Size | 2-Pack |
Typical Applications
- Lead abatement and heavy oil-mist operations; browse all P100 respirators
- SAS Safety maximum-hazard applications; browse all SAS Safety disposable respirators
- Asbestos fiber and hexavalent chromium environments; read our N95 vs P100 guide
- See our complete respirator guide for P100 scope of use
Hazard Coverage — SAS Safety 8641 P100 Valved Particulate Respirator — 2-Pack
The SAS Safety 8641 P100 Valved Particulate Respirator — 2-Pack is NIOSH-approved under 42 CFR 84 as a P100 respirator: ≥99.97% filtration (P100), oil-proof with no time restriction on oil aerosol exposure. Appropriate for lead dust abatement, asbestos fiber removal, hexavalent chromium from stainless welding, heavy oil mist, and any application requiring maximum particulate filtration. Browse all P100 disposable respirators.
Unlike N-class and R-class, the P-class has no oil-exposure time limit. Discard when breathing resistance increases or when soiled. Read our N95 vs P100 guide.
Compare 8641 vs 8621 vs 8620
| Model | Filter | Valve | Pack | Best For |
|---|---|---|---|---|
| 8641 (this page) | P100 | No | This product | |
| 8621 | R95 | Yes | 10-Pack | R95 (lower filtration) |
| 8620 | R95 | No | 20-Pack | R95 no valve |
More from our Disposable Respirators reviews
What separates the models in this category is set out in 3m 2091 vs 2097 filter, 3m 2091 vs honeywell north 7580p100, 3m 6000 vs 6500 respirator, 3m 6000 vs 6500 vs 7500 series half mask respirator compared, 3m 6001 vs 6003 cartridge.
Directly comparable options are grouped in 3m 6000 series full face mask respirator, 3m 60921 vs 60923 vs 60926 respirator cartridges, 3m 7800 series full face mask respirator.
Written by Steven Eaton, WC Safety editor. WC Safety is an independent PPE review site, holds no inventory and sells nothing directly; Amazon links are affiliate links that earn a commission at no cost to you and never affect the assessment. This page is not medical, legal or regulatory advice.
Further reading that bears directly on this choice: 3m 6003 vs honeywell north 7583p100l, 3m 60921 vs 60923 cartridge, 3m 60921 vs 60923 vs 60926 cartridge, 3m 60921 vs 60926 cartridge.
The rest of the range sits in 3m disposable respirators, 3m full face mask respirators.
Related standards and selection guidance: 3m 60921 vs honeywell north 7581p100l, 3m 60923 vs 60926 cartridge, 3m 60926 vs honeywell north 75scp100l, 3m 6500 vs 7500 respirator.
Alternatives at the same protection level are listed in 3m half mask respirators, 3m respirator filters and cartridges.
Brand / Vendor
SAS Safety
Model / SKU
8641
Product Type
Disposable Respirators
Availability
Check current availability on Amazon
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Frequently Asked Questions
What does the exhalation valve on the 8641 do?
The exhalation valve opens when you breathe out, allowing warm humid air to exit directly rather than passing back through the filter media. This reduces heat and moisture buildup inside the mask — a significant comfort advantage during extended or physically demanding wear. Inhalation closes the valve, so all inhaled air is filtered normally.
Does the valve on the 8641 reduce filtration efficiency?
No. The exhalation valve does not affect inhalation filtration efficiency — the 8641 still filters inhaled air at the rated N95/R95/P100 level. The valve only controls exhaled air routing. Note: because exhaled air is not filtered, valved respirators are not appropriate as source-control devices (e.g., in surgical environments or when protecting others from the wearer).
Is a valved respirator like the 8641 acceptable for source control?
No. A valved respirator directs exhaled air outward unfiltered and is not appropriate where the wearer must also protect others (surgical settings, some healthcare environments). Facility policies may prohibit valved masks in sterile or at-risk patient areas. For source-control requirements, use an unvalved N95 or a surgical N95.
What does P100 mean for the 8641?
P100 is the highest NIOSH particulate classification: ≥99.97% filtration efficiency, oil- proof (unlike R-series which is oil-resistant for one shift only). The 8641 provides maximum particulate filtration with no time restriction on oil aerosol exposure. Compare classes in our N95 vs P100 guide .
Is the 8641 NIOSH-approved?
Yes. The 8641 holds NIOSH P100 approval under 42 CFR 84 Subpart K. Confirm the TC approval number on the NIOSH Certified Equipment List using the model number printed on the mask.
What hazards is the 8641 rated for?
The 8641 is rated for oil-proof particulates at ≥99.97% efficiency — covering lead dust, asbestos fibers, hexavalent chromium, heavy oil mist, paint overspray, and fine metallic particulates. Browse all P100 disposable respirators .
Does the 8641 require a fit test?
Yes. OSHA 29 CFR 1910.134 requires fit testing before first use in any workplace respiratory protection program. See our fit testing guide for qualitative (BitrexTM/saccharin) and quantitative options for half-face disposable designs.
Can the 8641 be used for lead abatement?
Yes, the P100 filter class is commonly specified for lead dust and paint chip abatement work. OSHA's lead standard (29 CFR 1910.1025) specifies a minimum APF 10 (half-face) for many lead operations. A properly fitting P100 disposable meets this requirement; verify with your site's industrial hygienist.
How long does the 8641 last in oil mist environments?
Unlike the R95 class (one shift limit), the P100 class has no time restriction on oil aerosol exposure. Discard the 8641 when breathing resistance increases noticeably, when the mask is damaged or soiled, or per your employer's change-schedule program.
Does the 8641 filter vapors and gases?
No. The 8641 is a particulate filter only — it does not capture organic vapors, acid gases, or other chemical vapors. For combined particulate + vapor protection, you need a half-face or full-face respirator with combination cartridges. See our respirator selection guide .
How does the 8641 compare to N95 masks?
The 8641 (P100) filters 99.97% of particles and is oil-proof; an N95 filters 95% and has no oil resistance. Step up to the 8641 for lead, asbestos, heavy oil mist, or any application where an N95's 95% baseline isn't sufficient or where oil aerosols are present. Browse N95 masks for lighter-duty comparison.
Is the 8641 reusable?
The 8641 is a disposable respirator — discard after use per manufacturer guidance. Do not wash or attempt to decontaminate a disposable P100; the filter media and structural integrity cannot be verified after washing. SEE FULL REVIEW Amazon purchases via WC Safety links earn us an affiliate commission at no extra cost. Why trust this 8641 page? WC Safety operates as an independent industrial PPE review site stocking the SAS Safety 8641 P100 Valved Particulate Respirator — 2-Pack and its siblings for safety managers, procurement teams, and field supervisors. Specifications are cross-referenced against the NIOSH 42 CFR 84 approval certificate on the NIOSH Certified Equipment List and the SAS Safety Technical Data Sheet. Disclosed: WC Safety earns Amazon affiliate commissions on outbound clicks; this does not influence the specs or recommendations shown. By Steven Eaton — WC Safety Editoria