4EFC56 — O-RING

✓ Government record, cited

— · ORING SEAL

PRODUCT OVERVIEW

4EFC56: O-RING.

The O-RING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5331-01-159-8376, 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

4EFC56

NSN: 5331-01-159-8376
FSC: 5331 — O-ring
CAGE: 01FK3 — OERLIKON METCO US INC (USA)

SPECIFICATIONS

Part Number	4EFC56
NSN	5331-01-159-8376

COMPONENT DIAGRAM

OTHER ITEMS IN FSC 5331 — O-ring

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924

SUBSTITUTES & CROSS-REFERENCES 1

12E168Reference document

Same NSN cross-reference

Reference document — Secondary 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 4EFC56?

4EFC56 is a O-RING.

What parts can replace 4EFC56?

There is 1 known substitute for 4EFC56: 12E168. Substitute compatibility should be verified for your specific system.

What is the NSN for 4EFC56?

4EFC56 is cataloged in the U.S. Government catalog under NSN 5331-01-159-8376. This indicates validated use in U.S. government and defense supply chains.

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