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Technical Data Sheet
PartsTable / O-RING / AS568B-008
AS568B-008 ✓ 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, temp_rating: -70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, hardness_rating: 80.0 SHORE DUROMETER A NOMINAL, outside_diameter: 0.305 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN, center_hole_diameter: 0.171 INCHES MINIMUM AND 0.181 INCHES MAXIMUM IN, cross-sectional_height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-113-3804, 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
AS568B-008
NSN: 5331-00-113-3804
FSC: 5331 — O-RING
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialRUBBER
temp_rating-70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
hardness_rating80.0 SHORE DUROMETER A NOMINAL
outside_diameter0.305 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
center_hole_diameter0.171 INCHES MINIMUM AND 0.181 INCHES MAXIMUM IN
cross-sectional_height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
NSN5331-00-113-3804
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS568B-008 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
72-2539-106Interchangeable
interchangeable cross-reference
interchangeable
2AP253Interchangeable
interchangeable cross-reference
interchangeable
150-411KPC266Interchangeable
interchangeable cross-reference
interchangeable
21NE-066Interchangeable
interchangeable cross-reference
interchangeable
SN-6Interchangeable
interchangeable cross-reference
interchangeable
1535Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS568B-008?
AS568B-008 is a O-RING.
What parts can replace AS568B-008?
There are 25 known substitutes for AS568B-008: 72-2539-106, 2AP253, 150-411KPC266 and 22 more. Substitute compatibility should be verified for your specific system.
Is AS568B-008 still available?
AS568B-008 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