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AS568 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AS568: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include center_hole_diameter: 2.530 INCHES MINIMUM AND 2.570 INCHES MAXIMUM IN, cross-sectional_height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN, end_item_identification: SMALL MUNITIONS TRAIL, part_name_assigned_by_controlling_agency: O-RINGS. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-420-0728, 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
NSN: 5331-00-420-0728
NIINs: 004200728, 004350443, 004635611, 004677748, 005567877, 008193849, 008903738, 009830353, 010135820, 010381301, 010422823, 011051885, 012190475, 012305215, 012339298, 012376868, 012636175, 012658989, 012658990, 012770162, 012883804, 012889170, 012897845, 013087452, 013385551, 013722304, 016206509, 017141388
FSC: 5331 — O-ring
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
center_hole_diameter2.530 INCHES MINIMUM AND 2.570 INCHES MAXIMUM IN
cross-sectional_height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
end_item_identificationSMALL MUNITIONS TRAIL
part_name_assigned_by_controlling_agencyO-RINGS
NSN5331-00-420-0728
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS568 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: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.880 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.669 INCHES MINIMUM AND 0.679 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.880 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.669 INCHES MINIMUM AND 0.679 INCHES MAXIMUM IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE
SUBSTITUTES & CROSS-REFERENCES 2
ARP568-115AMS3651Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS568-115Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS568?
AS568 is a O-RING.
What parts can replace AS568?
There are 2 known substitutes for AS568: ARP568-115AMS3651, AS568-115. Substitute compatibility should be verified for your specific system.
What is the NSN for AS568?
AS568 is cataloged in the U.S. Government catalog under NSN 5331-00-420-0728. 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.