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454138 — HOSE ASSEMBLY,AIR BREATHING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

454138: HOSE ASSEMBLY,AIR BREATHING.

The HOSE ASSEMBLY,AIR BREATHING is a the manufacturer industrial component. Key specifications include material: RUBBER SILICONE CLASS Q FIRST PLY, coupling_style: THREADED INTERNAL BOTH ENDS, connection_type: THREADED BOTH ENDS, inside_diameter: 0.250 INCHES NOMINAL FIRST END IN, special_features: HOSE TO BE IAW MIL-H-81581; CONNECTION TYPE: GROUND JOINT EXTERNALLY THREADED TAILPIECE W/UNION NUT BOTH ENDS, style_designator: SLEEVE SECTION. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-159-2198, 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
454138
NSN: 5340-00-159-2198
NIINs: 001592198, 014424316
FSC: 5340 — Hardware, Commercial
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialRUBBER SILICONE CLASS Q FIRST PLY
coupling_styleTHREADED INTERNAL BOTH ENDS
connection_typeTHREADED BOTH ENDS
inside_diameter0.250 INCHES NOMINAL FIRST END IN
special_featuresHOSE TO BE IAW MIL-H-81581; CONNECTION TYPE: GROUND JOINT EXTERNALLY THREADED TAILPIECE W/UNION NUT BOTH ENDS
style_designatorSLEEVE SECTION
nominal_thread_size0.500 INCHES BOTH ENDS IN
end_item_identificationF-16
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) BOTH ENDS
cross-sectional_shape_styleROUNDROUND
part_name_assigned_by_controlling_agencyHOSE,OXYGEN,PERSONAL LEADS
NSN5340-00-159-2198
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 454138 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
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATION20MM CARRIAGE MK18MOD0 MM
SUBSTITUTES & CROSS-REFERENCES 1
BUWEPSDWG454138Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 454138?
454138 is a HOSE ASSEMBLY,AIR BREATHING.
What parts can replace 454138?
There is 1 known substitute for 454138: BUWEPSDWG454138. Substitute compatibility should be verified for your specific system.
What is the NSN for 454138?
454138 is cataloged in the U.S. Government catalog under NSN 5340-00-159-2198. This indicates validated use in U.S. government and defense supply chains.
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