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2178928 — RING,POSITIONING,SEAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

2178928: RING,POSITIONING,SEAL.

The RING,POSITIONING,SEAL is a the manufacturer industrial component. Key specifications include end_item_identification: TURBO PROP ENGINE MODEL TF30P414A, general_characteristics_item_description: CRES,AMS 5350; 6.000 IN. MIN,6.002 IN.

MAX O/A OD IN. This part is cataloged in the U.S. Government catalog under NSN 5365-01-135-8764, 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
2178928
NSN: 5365-01-135-8764
FSC: 5365 — Bushings, Rings, Shims, and Spacers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
end_item_identificationTURBO PROP ENGINE MODEL TF30P414A
general_characteristics_item_descriptionCRES,AMS 5350; 6.000 IN. MIN,6.002 IN. MAX O/A OD IN
NSN5365-01-135-8764
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING,POSITIONING,SEAL TITLE COMPONENT PN 2178928 MFR RING,POSITIONING,SEAL
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: CRES,AMS 5350; 6.000 IN. MIN,6.002 IN. MAX O/A OD IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCRES,AMS 5350; 6.000 IN. MIN,6.002 IN. MAX O/A OD IN
END ITEM IDENTIFICATIONTURBO PROP ENGINE MODEL TF30P414A
OTHER ITEMS IN FSC 5365 — Bushings, Rings, Shims, and Spacers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5365-00-000-6078 5365-00-000-7436 5365-00-001-1292 5365-00-001-1365 5365-00-001-1841 5365-00-001-1915 5365-00-001-1916 5365-00-001-1940
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)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 2178928?
2178928 is a RING,POSITIONING,SEAL.
What is the NSN for 2178928?
2178928 is cataloged in the U.S. Government catalog under NSN 5365-01-135-8764. 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.