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PartsTable / COMPONENT / M5501/7-F18
M5501/7-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 M5501/7-F18 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-290-7251, 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
M5501/7-F18
NSN: 5340-00-290-7251
FSC: 5340
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM5501/7-F18
NSN5340-00-290-7251
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M5501/7-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
•
CLOSED END OVERALL DIAMETER: 0.750 INCHES NOMINAL IN
•
LENGTH UNDER SHOULDER: 0.563 INCHES NOMINAL IN
•
MATERIAL: PLASTIC
•
OPEN END INSIDE DIAMETER: 0.785 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CLOSED END OVERALL DIAMETER0.750 INCHES NOMINAL IN
LENGTH UNDER SHOULDER0.563 INCHES NOMINAL IN
MATERIALPLASTIC
OPEN END INSIDE DIAMETER0.785 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
102C1279-1Upgraded Successor
successor cross-reference
successor
8028447Upgraded Successor
successor cross-reference
successor
353122-4Upgraded 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
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M5501/7-F18?
M5501/7-F18 is a M5501/7-F18.
What parts can replace M5501/7-F18?
There are 28 known substitutes for M5501/7-F18: 102C1279-1, 8028447, 353122-4 and 25 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M5501/7-F18?
M5501/7-F18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-290-7251. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026