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PartsTable / O-RING / AS568-902
AS568-902 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER, center_hole_diameter: 0.239 INCHES NOMINAL IN, cross-sectional_height: 0.064 INCHES NOMINAL IN, end_item_identification: 1025-01-445-0991;155MM HOWITZER,MEDIUM,TOWED MM, part_name_assigned_by_controlling_agency: O-RING,AIRCRAFT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-052-0537, 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
AS568-902
NSN: 5331-00-052-0537
FSC: 5331 — O-RING
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialRUBBER
center_hole_diameter0.239 INCHES NOMINAL IN
cross-sectional_height0.064 INCHES NOMINAL IN
end_item_identification1025-01-445-0991;155MM HOWITZER,MEDIUM,TOWED MM
part_name_assigned_by_controlling_agencyO-RING,AIRCRAFT
NSN5331-00-052-0537
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS568-902 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
•
TEMP RATING: -85.0 FAHRENHEIT AND 401.0 FAHRENHEIT DEGF
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
CROSS-SECTIONAL HEIGHT: 0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
OUTSIDE DIAMETER: 0.367 INCHES NOMINAL IN
•
MATERIAL: RUBBER SILICONE CLASS Q
•
CENTER HOLE DIAMETER: 0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
TEMP RATING-85.0 FAHRENHEIT AND 401.0 FAHRENHEIT DEGF
ELONGATION PERCENTAGE125 MAXIMUM
CROSS-SECTIONAL HEIGHT0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
OUTSIDE DIAMETER0.367 INCHES NOMINAL IN
MATERIALRUBBER SILICONE CLASS Q
CENTER HOLE DIAMETER0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
AS568-902Interchangeable
interchangeable cross-reference
interchangeable
877-50Interchangeable
interchangeable cross-reference
interchangeable
MS3393-2Interchangeable
interchangeable cross-reference
interchangeable
AS3582-029Interchangeable
interchangeable cross-reference
interchangeable
2-029 S604-70Interchangeable
interchangeable cross-reference
interchangeable
MS-9068-029Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS568-902?
AS568-902 is a O-RING.
What parts can replace AS568-902?
There are 26 known substitutes for AS568-902: AS568-902, 877-50, MS3393-2 and 23 more. Substitute compatibility should be verified for your specific system.
Is AS568-902 still available?
AS568-902 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026