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4051621 — SEAL,AIR,AIRCRAFT GAS TURBINE EN

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

4051621: SEAL,AIR,AIRCRAFT GAS TURBINE EN.

SEAL,AIR,AIRCRAFT GAS TURBINE EN. Key specifications include diameter: 16.800 INCHES MINIMUM AND 16.800 INCHES MINIMUM AND 16.820 INCHES MAXIMUM16.820 INCHES MAXIMUM IN, material: NICKEL ALLOY OVERALL, overall_length: 0.135 INCHES MINIMUM AND 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM0.145 INCHES MAXIMUM IN, end_item_identification: ACFT ENG F100-PW-100ACFT ENG F100-PW-100, engine_section_location: COMPRESSORCOMPRESSOR, criticality_code_justification: AGAVAGAV. This part is cataloged in the U.S.

Government catalog under NSN 2840-01-087-6637, 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
4051621
NSN: 2840-01-087-6637
FSC: 2840 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
diameter16.800 INCHES MINIMUM AND 16.800 INCHES MINIMUM AND 16.820 INCHES MAXIMUM16.820 INCHES MAXIMUM IN
materialNICKEL ALLOY OVERALL
overall_length0.135 INCHES MINIMUM AND 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM0.145 INCHES MAXIMUM IN
end_item_identificationACFT ENG F100-PW-100ACFT ENG F100-PW-100
engine_section_locationCOMPRESSORCOMPRESSOR
criticality_code_justificationAGAVAGAV
NSN2840-01-087-6637
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SEAL,AIR,AIRCRAFT GAS TURBINE EN TITLE COMPONENT PN 4051621 MFR SEAL,AIR,AIRCRAFT GAS
KEY FEATURES
•
CRITICALITY CODE JUSTIFICATION: AGAVAGAV
•
DIAMETER: 16.800 INCHES MINIMUM AND 16.800 INCHES MINIMUM AND 16.820 INCHES MAXIMUM16.820 INCHES MAXIMUM IN
•
ENGINE SECTION LOCATION: COMPRESSORCOMPRESSOR
•
MATERIAL: NICKEL ALLOY OVERALL
TECHNICAL CHARACTERISTICS
CRITICALITY CODE JUSTIFICATIONAGAVAGAV
DIAMETER16.800 INCHES MINIMUM AND 16.800 INCHES MINIMUM AND 16.820 INCHES MAXIMUM16.820 INCHES MAXIMUM IN
OVERALL LENGTH0.135 INCHES MINIMUM AND 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM0.145 INCHES MAXIMUM IN
ENGINE SECTION LOCATIONCOMPRESSORCOMPRESSOR
END ITEM IDENTIFICATIONACFT ENG F100-PW-100ACFT ENG F100-PW-100
MATERIALNICKEL ALLOY OVERALL
OTHER ITEMS IN FSC 2840 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2840-00-004-4242 2840-00-021-4702 2840-00-043-0981 2840-00-043-0982 2840-00-048-5261 2840-00-407-9165 2840-01-171-0875
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 4051621?
4051621 is a SEAL,AIR,AIRCRAFT GAS TURBINE EN.
What is the NSN for 4051621?
4051621 is cataloged in the U.S. Government catalog under NSN 2840-01-087-6637. 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.