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AS568-208 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AS568-208: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER, temp_rating: 25.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, hardness_rating: 80.0 SHORE DUROMETER A NOMINAL, center_hole_diameter: 0.600 INCHES MINIMUM AND 0.618 INCHES MAXIMUM IN, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN, end_item_identification: 4930-017061485. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-727-6096, 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
AS568-208
NSN: 5331-01-727-6096
FSC: 5331 — O-ring
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialRUBBER
temp_rating25.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
hardness_rating80.0 SHORE DUROMETER A NOMINAL
center_hole_diameter0.600 INCHES MINIMUM AND 0.618 INCHES MAXIMUM IN
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
end_item_identification4930-017061485
specification/standard_data0U583-SAE AS568 INTERNATIONAL STD/SPEC
material_document_and_classificationAFLAS RUBBER PER ASTM D2000 MFR REF SINGLE MATERIAL RESPONSE
part_name_assigned_by_controlling_agencyAEROSPACE SIZE STANDARD FOR O-RINGS; ULTRA-CHEMICAL-RESISTANT AFLAS O-RING
NSN5331-01-727-6096
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS568-208 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: 25.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
HARDNESS RATING: 80.0 SHORE DUROMETER A NOMINAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AFLAS RUBBER PER ASTM D2000 MFR REF SINGLE MATERIAL RESPONSE
•
SPECIFICATION/STANDARD DATA: 0U583-SAE AS568 INTERNATIONAL STD/SPEC
•
COLOR: BLACK
•
CENTER HOLE DIAMETER: 0.600 INCHES MINIMUM AND 0.618 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
TEMP RATING25.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
HARDNESS RATING80.0 SHORE DUROMETER A NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONAFLAS RUBBER PER ASTM D2000 MFR REF SINGLE MATERIAL RESPONSE
SPECIFICATION/STANDARD DATA0U583-SAE AS568 INTERNATIONAL STD/SPEC
COLORBLACK
SPECIAL FEATURESFOR USE WITH ACETIC ACID,AMMONIA,AMMONIUM HYDROXIDE,ANIMAL OILS,BORIC ACID,BRAKE FLUIDS,BUTYL ALCOHOL,CALCIUM HYDROXIDE,CITRIC ACID,GREASE,HYDRAULIC OILS,ISOPROPYL ALCOHOL,MOTOR OIL,NITRIC ACID,PETROLEUM FLUIDS,PHOSPHORIC ACID,SODIUM BICARBONATE AND SULFONIC ACID; ROHS 3 (2015/863/EU) COMPLIANT; REACH (EC 1907/2006) (06/14/2023, 235 SVHC) COMPLIANT; SPECIALTY METALS COTS-EXEMPT; SCHEDULE B 392690.4500
CENTER HOLE DIAMETER0.600 INCHES MINIMUM AND 0.618 INCHES MAXIMUM IN
PART NAME ASSIGNED BY CONTROLLING AGENCYAEROSPACE SIZE STANDARD FOR O-RINGS; ULTRA-CHEMICAL-RESISTANT AFLAS O-RING
END ITEM IDENTIFICATION4930-017061485
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
5240T122Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS568-208?
AS568-208 is a O-RING.
What parts can replace AS568-208?
There is 1 known substitute for AS568-208: 5240T122. Substitute compatibility should be verified for your specific system.
What is the NSN for AS568-208?
AS568-208 is cataloged in the U.S. Government catalog under NSN 5331-01-727-6096. 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.