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Technical Data Sheet
PartsTable / O-RING / 54A126-243
54A126-243 ✓ 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

The O-RING is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-579-7544, 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
54A126-243
NSN: 5331-00-579-7544
FSC: 5331 — O-RING
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
Part Number54A126-243
NSN5331-00-579-7544
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 54A126-243 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
468075Interchangeable
interchangeable cross-reference
interchangeable
623021Interchangeable
interchangeable cross-reference
interchangeable
458012Interchangeable
interchangeable cross-reference
interchangeable
B36-1346REVAPC102Interchangeable
interchangeable cross-reference
interchangeable
H1346PC102Interchangeable
interchangeable cross-reference
interchangeable
AN6230B21Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 54A126-243?
54A126-243 is a O-RING.
What parts can replace 54A126-243?
There are 29 known substitutes for 54A126-243: 468075, 623021, 458012 and 26 more. Substitute compatibility should be verified for your specific system.
Is 54A126-243 still available?
54A126-243 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026