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Technical Data Sheet
2478949 ✓ 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

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: STEEL, design_type: THREADED, thread_class: 2A A, overall_diameter: 0.375 INCHES NOMINAL IN, features_provided: SHOULDER, thread_size_and_series/type_designator: -0.375-24 UNF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-012-5197, 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
2478949
NSN: 5340-00-012-5197
FSC: 5340
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL
design_typeTHREADED
thread_class2A A
overall_diameter0.375 INCHES NOMINAL IN
features_providedSHOULDER
thread_size_and_series/type_designator-0.375-24 UNF
opening_inside_diameter_for_which_designed0.286 INCHES NOMINAL IN
NSN5340-00-012-5197
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2478949 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
FEATURES PROVIDED: SHOULDER
OPENING INSIDE DIAMETER FOR WHICH DESIGNED: 0.286 INCHES NOMINAL IN
MATERIAL: STEEL
DESIGN TYPE: THREADED
THREAD CLASS: 2A A
OVERALL DIAMETER: 0.375 INCHES NOMINAL IN
THREAD SIZE AND SERIES/TYPE DESIGNATOR: -0.375-24 UNF
TECHNICAL CHARACTERISTICS (FLIS)
FEATURES PROVIDEDSHOULDER
OPENING INSIDE DIAMETER FOR WHICH DESIGNED0.286 INCHES NOMINAL IN
MATERIALSTEEL
DESIGN TYPETHREADED
THREAD CLASS2A A
OVERALL DIAMETER0.375 INCHES NOMINAL IN
THREAD SIZE AND SERIES/TYPE DESIGNATOR-0.375-24 UNF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
24420Upgraded Successor
successor cross-reference
successor
23425Interchangeable
interchangeable cross-reference
interchangeable
5170525Interchangeable
interchangeable cross-reference
interchangeable
24423Interchangeable
interchangeable cross-reference
interchangeable
6883180Interchangeable
interchangeable cross-reference
interchangeable
464-0139Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2478949?
2478949 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace 2478949?
There are 10 known substitutes for 2478949: 24420, 23425, 5170525 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2478949?
2478949 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-012-5197. This indicates validated use in U.S. government and defense supply chains.
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