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Technical Data Sheet
PartsTable / COMPONENT / M5501/1-12G
M5501/1-12G ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The M5501/1-12G is a the manufacturer industrial component. Key specifications include Generation: 12th Gen. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-186-6879, 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
M5501/1-12G
NSN: 5340-01-186-6879
FSC: 5340
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Generation12th Gen
NSN5340-01-186-6879
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M5501/1-12G 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
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 1 1/16-12 UN
•
DESIGN TYPE: THREADED
•
THREAD CLASS: 2A A
•
SURFACE TREATMENT: CHROMATE
•
FEATURES PROVIDED: GASKET AND SHOULDER
•
OVERALL DIAMETER: 1.250 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN
•
MATERIAL: ALUMINUM ALLOY
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/2 FED SPEC SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SIZE AND SERIES/TYPE DESIGNATOR1 1/16-12 UN
DESIGN TYPETHREADED
THREAD CLASS2A A
SURFACE TREATMENTCHROMATE
FEATURES PROVIDEDGASKET AND SHOULDER
OVERALL DIAMETER1.250 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN
MATERIALALUMINUM ALLOY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/2 FED SPEC SINGLE MATERIAL RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
5340PL1866828Upgraded Successor
successor cross-reference
successor
81584Upgraded Successor
successor cross-reference
successor
10160009Upgraded Successor
successor cross-reference
successor
MIL-C-5501/1Upgraded Successor
successor cross-reference
successor
NAS815-4AUpgraded Successor
successor cross-reference
successor
NAS833-4Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M5501/1-12G?
M5501/1-12G is a M5501/1-12G.
What parts can replace M5501/1-12G?
There are 25 known substitutes for M5501/1-12G: 5340PL1866828, 81584, 10160009 and 22 more. Substitute compatibility should be verified for your specific system.
Is M5501/1-12G still available?
M5501/1-12G is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026