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AS568-440 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AS568-440: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include center_hole_diameter: 6.685 INCHES MINIMUM AND 6.765 INCHES MAXIMUM IN, cross-sectional_height: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-463-0326, 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
AS568-440
NSN: 5331-00-463-0326
NIINs: 004630326, 013957703
FSC: 5331 — O-ring
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
center_hole_diameter6.685 INCHES MINIMUM AND 6.765 INCHES MAXIMUM IN
cross-sectional_height0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
NSN5331-00-463-0326
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS568-440 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
SUBSTITUTES & CROSS-REFERENCES 6
ASC1465030Reference document
Same NSN cross-reference
Reference document — Secondary reference
0065268.70.63Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
2-440N674-70Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
2-440 N674-7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
S9233-XX-MMA-010/LCS SH7-93 #3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
54-66-5440Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS568-440?
AS568-440 is a O-RING.
What parts can replace AS568-440?
There are 6 known substitutes for AS568-440: ASC1465030, 0065268.70.63, 2-440N674-70 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS568-440?
AS568-440 is cataloged in the U.S. Government catalog under NSN 5331-00-463-0326. 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.