PartsTable
Technical Data Sheet
AS3581-220 ✓ 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 CHLOROPRENE CLASS CR, temp_rating: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF, hardness_rating: 90.0 SHORE DUROMETER A NOMINAL, outside_diameter: 1.637 INCHES NOMINAL IN, center_hole_diameter: 1.353 INCHES MINIMUM AND 1.365 INCHES MAXIMUM IN, elongation_percentage: 100 MAXIMUM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-103-2911, 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
AS3581-220
NSN: 5331-00-103-2911
FSC: 5331 — O-RING
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR
temp_rating-20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
hardness_rating90.0 SHORE DUROMETER A NOMINAL
outside_diameter1.637 INCHES NOMINAL IN
center_hole_diameter1.353 INCHES MINIMUM AND 1.365 INCHES MAXIMUM IN
elongation_percentage100 MAXIMUM
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
NSN5331-00-103-2911
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS3581-220 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
CENTER HOLE DIAMETER: 1.353 INCHES MINIMUM AND 1.365 INCHES MAXIMUM IN
HARDNESS RATING: 90.0 SHORE DUROMETER A NOMINAL
OUTSIDE DIAMETER: 1.637 INCHES NOMINAL IN
ELONGATION PERCENTAGE: 100 MAXIMUM
MATERIAL: RUBBER CHLOROPRENE CLASS CR
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
TEMP RATING: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER1.353 INCHES MINIMUM AND 1.365 INCHES MAXIMUM IN
HARDNESS RATING90.0 SHORE DUROMETER A NOMINAL
OUTSIDE DIAMETER1.637 INCHES NOMINAL IN
ELONGATION PERCENTAGE100 MAXIMUM
MATERIALRUBBER CHLOROPRENE CLASS CR
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
TEMP RATING-20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
2621-607-01 PC 65-4Interchangeable
interchangeable cross-reference
interchangeable
40688-8 PC 22Interchangeable
interchangeable cross-reference
interchangeable
AS3581-220Interchangeable
interchangeable cross-reference
interchangeable
440051-2200 CPInterchangeable
interchangeable cross-reference
interchangeable
AS3581-220 CPInterchangeable
interchangeable cross-reference
interchangeable
285008-0001 ITEM NO. 66 CPInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS3581-220?
AS3581-220 is a O-RING.
What parts can replace AS3581-220?
There are 9 known substitutes for AS3581-220: 2621-607-01 PC 65-4, 40688-8 PC 22, AS3581-220 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS3581-220?
AS3581-220 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-103-2911. This indicates validated use in U.S. government and defense supply chains.
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