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R5051 — MASK AND CARTRIDGE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

R5051: MASK AND CARTRIDGE.

The MASK AND CARTRIDGE is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: FOR RESPIRATOR,MEDIUM SIZE. This part is cataloged in the U.S.

Government catalog under NSN 4240-01-128-6859, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
R5051
NSN: 4240-01-128-6859
FSC: 4240 — Safety and Rescue Equipment
CAGE: 02622 — AMERICAN OPTICAL CO (USA)
SPECIFICATIONS
general_characteristics_item_descriptionFOR RESPIRATOR,MEDIUM SIZE
NSN4240-01-128-6859
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MASK AND CARTRIDGE TITLE COMPONENT PN R5051 MFR MASK AND CARTRIDGE
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: FOR RESPIRATOR,MEDIUM SIZE
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONFOR RESPIRATOR,MEDIUM SIZE
OTHER ITEMS IN FSC 4240 — Safety and Rescue Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4240-00-001-1515 4240-00-001-2684 4240-00-006-0022 4240-00-007-4576 4240-00-007-8182 4240-00-007-8183 4240-00-007-8184 4240-00-007-8185
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is R5051?
R5051 is a MASK AND CARTRIDGE.
What is the NSN for R5051?
R5051 is cataloged in the U.S. Government catalog under NSN 4240-01-128-6859. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.