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Technical Data Sheet

M5501/5-R6 — Technical Data Sheet

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· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: PLASTIC, POLYETHYLENE (PP), design_type: THREADED, overall_diameter: 0.437 INCHES NOMINAL IN, thread_size_and_series/type_designator: 0.375-18 NPT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-016-7383, 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
M5501/5-R6
NSN: 5340-01-016-7383
FSC: 5340
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialPLASTIC, POLYETHYLENE (PP)
design_typeTHREADED
overall_diameter0.437 INCHES NOMINAL IN
thread_size_and_series/type_designator0.375-18 NPT
NSN5340-01-016-7383
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M5501/5-R6 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, POLYETHYLENE (PP)
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 0.375-18 NPT
OVERALL DIAMETER: 0.437 INCHES NOMINAL IN
DESIGN TYPE: THREADED
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC, POLYETHYLENE (PP)
THREAD SIZE AND SERIES/TYPE DESIGNATOR0.375-18 NPT
OVERALL DIAMETER0.437 INCHES NOMINAL IN
DESIGN TYPETHREADED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
M5501/5-4Upgraded Successor
successor cross-reference
successor
MIL-C-5501/5Upgraded Successor
successor cross-reference
successor
M5501/5-2Upgraded Successor
successor cross-reference
successor
MILC5501TYPE5CLASSASIZE1-8Upgraded Successor
successor cross-reference
successor
M5501/5-R8Upgraded Successor
successor cross-reference
successor
M5501/5-6Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M5501/5-R6?
M5501/5-R6 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace M5501/5-R6?
There are 15 known substitutes for M5501/5-R6: M5501/5-4, MIL-C-5501/5, M5501/5-2 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M5501/5-R6?
M5501/5-R6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-016-7383. This indicates validated use in U.S. government and defense supply chains.
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