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PartsTable / COMPONENT / M5501/9-F18
M5501/9-F18 ✓ 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 M5501/9-F18 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-208-7825, 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
M5501/9-F18
NSN: 5340-01-208-7825
FSC: 5340
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM5501/9-F18
NSN5340-01-208-7825
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M5501/9-F18 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: PLASTIC
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 1.240 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
•
INSIDE DIAMETER LENGTH: 0.500 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN
•
ROUND CAP OUTSIDE SURFACE CONDITION: SMOOTH
•
OVERALL DIAMETER: 1.300 INCHES MINIMUM AND 1.390 INCHES MAXIMUM IN
•
DESIGN TYPE: FRICTION
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED1.240 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
INSIDE DIAMETER LENGTH0.500 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN
ROUND CAP OUTSIDE SURFACE CONDITIONSMOOTH
OVERALL DIAMETER1.300 INCHES MINIMUM AND 1.390 INCHES MAXIMUM IN
DESIGN TYPEFRICTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
125010Upgraded Successor
successor cross-reference
successor
NAS847Upgraded Successor
successor cross-reference
successor
MIL-C-5501/7Upgraded Successor
successor cross-reference
successor
M5501/7-F24Upgraded Successor
successor cross-reference
successor
AEP1543-2Upgraded Successor
successor cross-reference
successor
EC14Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M5501/9-F18?
M5501/9-F18 is a M5501/9-F18.
What parts can replace M5501/9-F18?
There are 24 known substitutes for M5501/9-F18: 125010, NAS847, MIL-C-5501/7 and 21 more. Substitute compatibility should be verified for your specific system.
Is M5501/9-F18 still available?
M5501/9-F18 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