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Technical Data Sheet
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18-5655-1 — SEAT,BEARING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

18-5655-1: SEAT,BEARING.

The SEAT,BEARING is a the manufacturer industrial component. Key specifications include end_item_identification: F-22 RAPTOR, part_name_assigned_by_controlling_agency: SEAT,BEARING. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-489-0747, 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
18-5655-1
NSN: 5340-00-489-0747
NIINs: 004890747, 015069159, 016583140
FSC: 5340 — Hardware, Commercial
CAGE: 19220 — EASTERN CO DIV EBERHARD MANUFACTURING (USA)
SPECIFICATIONS
end_item_identificationF-22 RAPTOR
part_name_assigned_by_controlling_agencySEAT,BEARING
NSN5340-00-489-0747
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 18-5655-1 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
•
SHAFT ACCOMMODATION STYLE: SQUARE
•
HANDLE HEIGHT: 1.564 INCHES MINIMUM AND 1.574 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: U
•
HANDLE CLEARANCE: 0.564 INCHES MINIMUM AND 0.574 INCHES MAXIMUM IN
•
MATERIAL: IRON MALLEABLE OVERALL
TECHNICAL CHARACTERISTICS
SHAFT ACCOMMODATION STYLESQUARE
HANDLE HEIGHT1.564 INCHES MINIMUM AND 1.574 INCHES MAXIMUM IN
STYLE DESIGNATORU
OVERALL LENGTH6.625 INCHES NOMINAL IN
HANDLE CLEARANCE0.564 INCHES MINIMUM AND 0.574 INCHES MAXIMUM IN
SPECIAL FEATURES0.125 IN. DIA PIN HOLE IN HEAD SHAFT HOLE DRIFT TO 0.314 TO 0.315 IN9 SQ BY 0.750 IN. DEEP IN
MATERIALIRON MALLEABLE OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
SM-D-564781-7Reference 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 18-5655-1?
18-5655-1 is a SEAT,BEARING.
What parts can replace 18-5655-1?
There is 1 known substitute for 18-5655-1: SM-D-564781-7. Substitute compatibility should be verified for your specific system.
What is the NSN for 18-5655-1?
18-5655-1 is cataloged in the U.S. Government catalog under NSN 5340-00-489-0747. 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.