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Technical Data Sheet
M5501-7F18 ✓ 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

CAP-PLUG,PROTECTIVE,DUST AND MOI. Key specifications include material: PLASTIC, length_under_shoulder: 0.530 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN, open_end_inside_diameter: 0.677 INCHES MINIMUM AND 0.697 INCHES MAXIMUM IN, closed_end_overall_diameter: 0.838 INCHES MINIMUM AND 0.858 INCHES MAXIMUM IN. 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
M5501-7F18
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
materialPLASTIC
length_under_shoulder0.530 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN
open_end_inside_diameter0.677 INCHES MINIMUM AND 0.697 INCHES MAXIMUM IN
closed_end_overall_diameter0.838 INCHES MINIMUM AND 0.858 INCHES MAXIMUM IN
NSN5340-00-290-7251
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M5501-7F18 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 29
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 M5501-7F18?
M5501-7F18 is a CAP-PLUG,PROTECTIVE,DUST AND MOI.
What parts can replace M5501-7F18?
There are 29 known substitutes for M5501-7F18: 102C1279-1, 8028447, 353122-4 and 26 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M5501-7F18?
M5501-7F18 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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