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MS9379-09 — PLUG,EXPANSION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MS9379-09: PLUG,EXPANSION.

The PLUG,EXPANSION is a the manufacturer industrial component. Key specifications include radius: 0.875 INCHES NOMINAL IN, material: STEEL, outside_diameter: 0.684 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN, style_designator: CONCAVE, material_thickness: 0.063 INCHES NOMINAL IN, end_item_identification: C-5 AIRCRAFT. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-581-2789, 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
MS9379-09
NSN: 5340-01-581-2789
FSC: 5340 — Hardware, Commercial
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
radius0.875 INCHES NOMINAL IN
materialSTEEL
outside_diameter0.684 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN
style_designatorCONCAVE
material_thickness0.063 INCHES NOMINAL IN
end_item_identificationC-5 AIRCRAFT
material_document_and_classificationAMS 5510 ASSN STD SINGLE MATERIAL RESPONSE
part_name_assigned_by_controlling_agencyPLUG,EXPANSION AMS 5510
NSN5340-01-581-2789
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS9379-09 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
•
RADIUS: 0.875 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.684 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: CONCAVE
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE
•
MATERIAL THICKNESS: 0.063 INCHES NOMINAL IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
RADIUS0.875 INCHES NOMINAL IN
OUTSIDE DIAMETER0.684 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN
STYLE DESIGNATORCONCAVE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5510 ASSN STD SINGLE MATERIAL RESPONSE
MATERIAL THICKNESS0.063 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYPLUG,EXPANSION AMS 5510
END ITEM IDENTIFICATIONC-5 AIRCRAFT
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 1
SAE-AS9379Reference document
Same NSN cross-reference
Reference document — Design control — primary 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 MS9379-09?
MS9379-09 is a PLUG,EXPANSION.
What parts can replace MS9379-09?
There is 1 known substitute for MS9379-09: SAE-AS9379. Substitute compatibility should be verified for your specific system.
What is the NSN for MS9379-09?
MS9379-09 is cataloged in the U.S. Government catalog under NSN 5340-01-581-2789. 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.