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3HA448 — PLUG,LEAKPROOF SEAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

3HA448: PLUG,LEAKPROOF SEAL.

The PLUG,LEAKPROOF SEAL is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-01-474-8059, 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
3HA448
NSN: 5340-01-474-8059
FSC: 5340 — Hardware, Commercial
CAGE: 45152 — OSHKOSH CORP (USA)
SPECIFICATIONS
Part Number3HA448
NSN5340-01-474-8059
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3HA448 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 IDENTIFICATIONCONTRACTOR LOGISTICS LIFETIME SUPPORT (CRLS), HYDRAULIC EXCAVATOR TYPE 1 (HYEX)(MODEL 230 LCR HX1), NSN 3805-01-463-0804, TM5-3805-280-24-P; 2320-01-097-0260 HEMTT (HEAVY EXPANDED MOBILITY TACTICAL TRUCK)
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
251816991107Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3HA448?
3HA448 is a PLUG,LEAKPROOF SEAL.
What parts can replace 3HA448?
There is 1 known substitute for 3HA448: 251816991107. Substitute compatibility should be verified for your specific system.
What is the NSN for 3HA448?
3HA448 is cataloged in the U.S. Government catalog under NSN 5340-01-474-8059. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.