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6521-10-902-1164 — SEAL,NONMETALLIC SPECIAL SHAPED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6521-10-902-1164: SEAL,NONMETALLIC SPECIAL SHAPED.

SEAL,NONMETALLIC SPECIAL SHAPED. Key specifications include material: RUBBER OVERALL, fsc_application_data: STRUCTURE ASSY STA 375-STA 399 MAIN ROTOR PYLON, end_item_identification: CH-53A/D/E HELICOPTER A, part_name_assigned_by_controlling_agency: SEAL,PYLON,MAIN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-480-5677, 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
6521-10-902-1164
NSN: 5330-01-480-5677
FSC: 5330 — Packing and Gasket Materials
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialRUBBER OVERALL
fsc_application_dataSTRUCTURE ASSY STA 375-STA 399 MAIN ROTOR PYLON
end_item_identificationCH-53A/D/E HELICOPTER A
part_name_assigned_by_controlling_agencySEAL,PYLON,MAIN
NSN5330-01-480-5677
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6521-10-902-1164 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
KEY FEATURES
•
FSC APPLICATION DATA: STRUCTURE ASSY STA 375-STA 399 MAIN ROTOR PYLON
•
MATERIAL: RUBBER OVERALL
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATASTRUCTURE ASSY STA 375-STA 399 MAIN ROTOR PYLON
PART NAME ASSIGNED BY CONTROLLING AGENCYSEAL,PYLON,MAIN
END ITEM IDENTIFICATIONCH-53A/D/E HELICOPTER A
MATERIALRUBBER OVERALL
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6521-10-902-1164?
6521-10-902-1164 is a SEAL,NONMETALLIC SPECIAL SHAPED.
What is the NSN for 6521-10-902-1164?
6521-10-902-1164 is cataloged in the U.S. Government catalog under NSN 5330-01-480-5677. 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.