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Technical Data Sheet
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4189423 — SEAL,PLAIN

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4189423: SEAL,PLAIN.

The SEAL,PLAIN is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-01-044-7388, 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
4189423
NSN: 5330-01-044-7388
FSC: 5330 — Packing and Gasket Materials
CAGE: 80212 — BAE SYSTEMS LAND & ARMAMENTS L.P. (USA)
SPECIFICATIONS
Part Number4189423
NSN5330-01-044-7388
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4189423 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
SUBSTITUTES & CROSS-REFERENCES 2
300845Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5330010447388Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4189423?
4189423 is a SEAL,PLAIN.
What parts can replace 4189423?
There are 2 known substitutes for 4189423: 300845, 5330010447388. Substitute compatibility should be verified for your specific system.
What is the NSN for 4189423?
4189423 is cataloged in the U.S. Government catalog under NSN 5330-01-044-7388. This indicates validated use in U.S. government and defense supply chains.
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