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Technical Data Sheet
PartsTable / COMPONENT / M5501/2-R2
M5501/2-R2 ✓ 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 M5501/2-R2 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 5340-01-206-5370, 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
M5501/2-R2
NSN: 5340-01-206-5370
FSC: 5340
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM5501/2-R2
NSN5340-01-206-5370
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M5501/2-R2 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
•
DESIGN TYPE: THREADED
•
OVERALL DIAMETER: 0.580 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN
•
THREAD CLASS: 2A A
•
DRIVE TYPE: SERRATED
•
FEATURES PROVIDED: SHOULDER
•
SURFACE TREATMENT: CHROMATE
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 5/16-24 UNF
TECHNICAL CHARACTERISTICS (FLIS)
DESIGN TYPETHREADED
OVERALL DIAMETER0.580 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN
THREAD CLASS2A A
DRIVE TYPESERRATED
FEATURES PROVIDEDSHOULDER
SURFACE TREATMENTCHROMATE
SPECIAL FEATURESHEX HEAD,SCREW SLOT
THREAD SIZE AND SERIES/TYPE DESIGNATOR5/16-24 UNF
MATERIALPLASTIC
MATERIAL DOCUMENT AND CLASSIFICATIONL-P-390, TYPE 1, CLASS L, GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
NAS847Upgraded Successor
successor cross-reference
successor
NAS842-12AUpgraded Successor
successor cross-reference
successor
MIL-C-5501/2Upgraded Successor
successor cross-reference
successor
M5501/2-8Upgraded Successor
successor cross-reference
successor
M5501/2-6Upgraded Successor
successor cross-reference
successor
NAS842-24AUpgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M5501/2-R2?
M5501/2-R2 is a M5501/2-R2.
What parts can replace M5501/2-R2?
There are 13 known substitutes for M5501/2-R2: NAS847, NAS842-12A, MIL-C-5501/2 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M5501/2-R2?
M5501/2-R2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-206-5370. 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