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7T0566-328 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

7T0566-328: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include center_hole_diameter: 1.850 INCHES NOMINAL IN, cross-sectional_height: 0.210 INCHES NOMINAL IN, end_item_identification: C-17A AIRCRAFT A. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-540-3618, 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
7T0566-328
NSN: 5331-01-540-3618
FSC: 5331 — O-ring
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
center_hole_diameter1.850 INCHES NOMINAL IN
cross-sectional_height0.210 INCHES NOMINAL IN
end_item_identificationC-17A AIRCRAFT A
NSN5331-01-540-3618
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7T0566-328 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
•
CROSS-SECTIONAL HEIGHT: 0.210 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.850 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.210 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.850 INCHES NOMINAL IN
END ITEM IDENTIFICATIONC-17A AIRCRAFT A
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7T0566-328?
7T0566-328 is a O-RING.
What is the NSN for 7T0566-328?
7T0566-328 is cataloged in the U.S. Government catalog under NSN 5331-01-540-3618. 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.