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4391057 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4391057: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, cross-sectional_height: 2.840 INCHES NOMINAL IN, end_item_identification: NSN:2320-01-653-6516;TRUCK,UTILITY, cross-sectional_thickness: 0.060 INCHES NOMINAL IN, cross_section_outside_diameter: 3.720 INCHES NOMINAL IN, part_name_assigned_by_controlling_agency: GASKET,MANIFOLD-UP PIPE,UPR.. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-672-0640, 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
4391057
NSN: 5330-01-672-0640
FSC: 5330 — Packing and Gasket Materials
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cross-sectional_height2.840 INCHES NOMINAL IN
end_item_identificationNSN:2320-01-653-6516;TRUCK,UTILITY
cross-sectional_thickness0.060 INCHES NOMINAL IN
cross_section_outside_diameter3.720 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyGASKET,MANIFOLD-UP PIPE,UPR.
NSN5330-01-672-0640
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4391057 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 THICKNESS: 0.060 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 2.840 INCHES NOMINAL IN
•
CROSS SECTION OUTSIDE DIAMETER: 3.720 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.060 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT2.840 INCHES NOMINAL IN
CROSS SECTION OUTSIDE DIAMETER3.720 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYGASKET,MANIFOLD-UP PIPE,UPR.
END ITEM IDENTIFICATIONNSN:2320-01-653-6516;TRUCK,UTILITY
MATERIALSTEEL OVERALL
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 1
12676608Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4391057?
4391057 is a GASKET.
What parts can replace 4391057?
There is 1 known substitute for 4391057: 12676608. Substitute compatibility should be verified for your specific system.
What is the NSN for 4391057?
4391057 is cataloged in the U.S. Government catalog under NSN 5330-01-672-0640. 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.