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AS3121-12 — PLUG,EXPANSION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AS3121-12: PLUG,EXPANSION.

The PLUG,EXPANSION is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024, special_features: OVERSIZE DIAMETER OF 0.010 INCHES IN, end_item_identification: T64 ENGINE, part_name_assigned_by_controlling_agency: PLUG EXPANSION. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-600-1229, 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
AS3121-12
NSN: 5340-01-600-1229
FSC: 5340 — Hardware, Commercial
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024
special_featuresOVERSIZE DIAMETER OF 0.010 INCHES IN
end_item_identificationT64 ENGINE
part_name_assigned_by_controlling_agencyPLUG EXPANSION
NSN5340-01-600-1229
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS3121-12 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
•
MATERIAL: ALUMINUM ALLOY 2024
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESOVERSIZE DIAMETER OF 0.010 INCHES IN
PART NAME ASSIGNED BY CONTROLLING AGENCYPLUG EXPANSION
END ITEM IDENTIFICATIONT64 ENGINE
MATERIALALUMINUM ALLOY 2024
SUBSTITUTES & CROSS-REFERENCES 1
SAE-AS3121Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS3121-12?
AS3121-12 is a PLUG,EXPANSION.
What parts can replace AS3121-12?
There is 1 known substitute for AS3121-12: SAE-AS3121. Substitute compatibility should be verified for your specific system.
What is the NSN for AS3121-12?
AS3121-12 is cataloged in the U.S. Government catalog under NSN 5340-01-600-1229. This indicates validated use in U.S. government and defense supply chains.
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