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PartsTable / COMPONENT / M5501/1-8
M5501/1-8 ✓ 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 M5501/1-8 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-828-8802, 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
M5501/1-8
NSN: 5340-00-828-8802
FSC: 5340
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM5501/1-8
NSN5340-00-828-8802
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M5501/1-8 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 DOCUMENT AND CLASSIFICATION: QQ-A-250/2, TEMPER 0 FED SPEC SINGLE MATERIAL RESPONSE
•
THREAD CLASS: 2A A
•
FEATURES PROVIDED: SHOULDER
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 3/4-16 UNF
•
MATERIAL: ALUMINUM ALLOY 3003
•
SURFACE TREATMENT: ANODIZE
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/2, TEMPER 0 FED SPEC SINGLE MATERIAL RESPONSE
THREAD CLASS2A A
FEATURES PROVIDEDSHOULDER
SPECIAL FEATURESSURFACE TREATMENT MIL-A-8625 TY 2
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
THREAD SIZE AND SERIES/TYPE DESIGNATOR3/4-16 UNF
MATERIALALUMINUM ALLOY 3003
SURFACE TREATMENTANODIZE
DESIGN TYPETHREADED
OVERALL DIAMETER0.940 INCHES MINIMUM AND 1.190 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
M5501/1-R6Upgraded Successor
successor cross-reference
successor
MILC5501Upgraded Successor
successor cross-reference
successor
MIL-C-5501/1Upgraded Successor
successor cross-reference
successor
M5501/1-R8Upgraded Successor
successor cross-reference
successor
PD60Upgraded Successor
successor cross-reference
successor
25726009-04Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M5501/1-8?
M5501/1-8 is a M5501/1-8.
What parts can replace M5501/1-8?
There are 25 known substitutes for M5501/1-8: M5501/1-R6, MILC5501, MIL-C-5501/1 and 22 more. Substitute compatibility should be verified for your specific system.
Is M5501/1-8 still available?
M5501/1-8 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