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AS568A-040 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AS568A-040: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, center_hole_diameter: 2.875 INCHES NOMINAL IN, cross-sectional_height: 3.000 INCHES NOMINAL IN, end_item_identification: 8196914(53711) GEAR FRAME SHAFT ASSY. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-561-0867, 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
AS568A-040
NSN: 5331-01-561-0867
FSC: 5331 — O-ring
CAGE: 7U322 — MARCO RUBBER AND PLASTICS (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
center_hole_diameter2.875 INCHES NOMINAL IN
cross-sectional_height3.000 INCHES NOMINAL IN
end_item_identification8196914(53711) GEAR FRAME SHAFT ASSY
NSN5331-01-561-0867
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS568A-040 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: 3.000 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 2.875 INCHES NOMINAL IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT3.000 INCHES NOMINAL IN
CENTER HOLE DIAMETER2.875 INCHES NOMINAL IN
END ITEM IDENTIFICATION8196914(53711) GEAR FRAME SHAFT ASSY
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
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 1
AS568A-040 BUNA-NReference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS568A-040?
AS568A-040 is a O-RING.
What parts can replace AS568A-040?
There is 1 known substitute for AS568A-040: AS568A-040 BUNA-N. Substitute compatibility should be verified for your specific system.
What is the NSN for AS568A-040?
AS568A-040 is cataloged in the U.S. Government catalog under NSN 5331-01-561-0867. 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.