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4400591-0180 — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4400591-0180: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROCARBON CLASS FPM, hardness_rating: 85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MAXIMUM, outside_diameter: 0.879 INCHES NOMINAL IN, center_hole_diameter: 0.750 INCHES NOMINAL IN, elongation_percentage: 125 MAXIMUM, cross-sectional_height: 0.062 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-245-2348, 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
4400591-0180
NSN: 5331-00-245-2348
NIINs: 002452348, 013202786
FSC: 5331 — O-ring
CAGE: 99657 — MAROTTA CONTROLS INC (USA)
SPECIFICATIONS
materialRUBBER FLUOROCARBON CLASS FPM
hardness_rating85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MAXIMUM
outside_diameter0.879 INCHES NOMINAL IN
center_hole_diameter0.750 INCHES NOMINAL IN
elongation_percentage125 MAXIMUM
cross-sectional_height0.062 INCHES NOMINAL IN
criticality_code_justificationZZZY
material_document_and_classificationMIL-R-25897,CL 2 MIL SPEC SINGLE MATERIAL RESPONSE
reference_number_differentiating_characteristicsCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
NSN5331-00-245-2348
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4400591-0180 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL HEIGHT: 0.062 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.879 INCHES NOMINAL IN
•
HARDNESS RATING: 85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MAXIMUM
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-25897,CL 2 MIL SPEC SINGLE MATERIAL RESPONSE
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
CENTER HOLE DIAMETER: 0.750 INCHES NOMINAL IN
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.062 INCHES NOMINAL IN
OUTSIDE DIAMETER0.879 INCHES NOMINAL IN
HARDNESS RATING85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MAXIMUM
CRITICALITY CODE JUSTIFICATIONZZZY
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-25897,CL 2 MIL SPEC SINGLE MATERIAL RESPONSE
ELONGATION PERCENTAGE125 MAXIMUM
CENTER HOLE DIAMETER0.750 INCHES NOMINAL IN
MATERIALRUBBER FLUOROCARBON CLASS FPM
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
SUBSTITUTES & CROSS-REFERENCES 3
AS568-018MILR25897CL2Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS568-018MILR25897CL2CPReference document
Same NSN cross-reference
Reference document — Secondary reference
4400591-0180CPReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4400591-0180?
4400591-0180 is a PACKING,PREFORMED.
What parts can replace 4400591-0180?
There are 3 known substitutes for 4400591-0180: AS568-018MILR25897CL2, AS568-018MILR25897CL2CP, 4400591-0180CP. Substitute compatibility should be verified for your specific system.
What is the NSN for 4400591-0180?
4400591-0180 is cataloged in the U.S. Government catalog under NSN 5331-00-245-2348. 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.