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MS4438 — SEAL,ANTIPILFERAGE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MS4438: SEAL,ANTIPILFERAGE.

The SEAL,ANTIPILFERAGE is a the manufacturer industrial component. Key specifications include shape: ROUND WITH FLATTED SIDE(S), width: 0.156 INCHES NOMINAL IN, height: 0.375 INCHES NOMINAL IN, length: 0.500 INCHES NOMINAL IN, material: ALUMINUM. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-573-3494, 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
MS4438
NSN: 5340-00-573-3494
FSC: 5340 — Hardware, Commercial
CAGE: 42280 — GARDNER DENVER NASH LLC DBA GARDNER DENVER ENGINEERED PRODUCTS GROUP DIV GARDNER DENVER NASH (USA)
SPECIFICATIONS
shapeROUND WITH FLATTED SIDE(S)
width0.156 INCHES NOMINAL IN
height0.375 INCHES NOMINAL IN
length0.500 INCHES NOMINAL IN
materialALUMINUM
hole_quantity2
NSN5340-00-573-3494
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS4438 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
•
LENGTH: 0.500 INCHES NOMINAL IN
•
SHAPE: ROUND WITH FLATTED SIDE(S)
•
HEIGHT: 0.375 INCHES NOMINAL IN
•
WIDTH: 0.156 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM
•
HOLE QUANTITY: 2
TECHNICAL CHARACTERISTICS
LENGTH0.500 INCHES NOMINAL IN
SHAPEROUND WITH FLATTED SIDE(S)
HEIGHT0.375 INCHES NOMINAL IN
WIDTH0.156 INCHES NOMINAL IN
MATERIALALUMINUM
HOLE QUANTITY2
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

No substitute or cross-reference records for this part.

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 MS4438?
MS4438 is a SEAL,ANTIPILFERAGE.
What is the NSN for MS4438?
MS4438 is cataloged in the U.S. Government catalog under NSN 5340-00-573-3494. 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.