PartsTable
Technical Data Sheet
AS3581 ✓ 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: FLUOROCARBON RUBBER, hardness_rating: 85.0 SHORE DUROMETER A NOMINAL AND 95.0 SHORE DUROMETER A NOMINAL, center_hole_diameter: 2.091 INCHES MINIMUM AND 2.127 INCHES MAXIMUM IN, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN, specification/standard_data: 0U583-AS3581 NATIONAL STD/SPEC, material_document_and_classification: AMS AS3581 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-425-0649, 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
AS3581
NSN: 5331-00-425-0649
FSC: 5331 — O-RING
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialFLUOROCARBON RUBBER
hardness_rating85.0 SHORE DUROMETER A NOMINAL AND 95.0 SHORE DUROMETER A NOMINAL
center_hole_diameter2.091 INCHES MINIMUM AND 2.127 INCHES MAXIMUM IN
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
specification/standard_data0U583-AS3581 NATIONAL STD/SPEC
material_document_and_classificationAMS AS3581 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE
part_name_assigned_by_controlling_agencyPACKING, PREFORMED - O-RING SEAL
NSN5331-00-425-0649
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS3581 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
OUTSIDE DIAMETER: 0.274 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN
HARDNESS RATING: 90.0 SHORE DUROMETER A NOMINAL
CENTER HOLE DIAMETER: 0.139 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER0.274 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN
HARDNESS RATING90.0 SHORE DUROMETER A NOMINAL
CENTER HOLE DIAMETER0.139 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROCARBON CLASS FPM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
24721Interchangeable
interchangeable cross-reference
interchangeable
3003514Interchangeable
interchangeable cross-reference
interchangeable
GP4222Interchangeable
interchangeable cross-reference
interchangeable
216-19359Interchangeable
interchangeable cross-reference
interchangeable
4564216EUInterchangeable
interchangeable cross-reference
interchangeable
5331PL1334898Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS3581?
AS3581 is a O-RING.
What parts can replace AS3581?
There are 31 known substitutes for AS3581: 24721, 3003514, GP4222 and 28 more. Substitute compatibility should be verified for your specific system.
Is AS3581 still available?
AS3581 is currently cancelled.
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