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Technical Data Sheet
PartsTable / O-RING / 1801490 ITEM NO. 405
1801490 ITEM NO. 405 ✓ 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 1801490 ITEM NO. 405 is a the manufacturer industrial component. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-869-3638, 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
1801490 ITEM NO. 405
NSN: 5331-00-869-3638
FSC: 5331 — O-RING
CAGE: 1S3F8 — BLACKMER SYSTEM ONE, INC. DIV BLACKMER SYSTEM ONE, INC. (USA)
SPECIFICATIONS
Part Number1801490 ITEM NO. 405
NSN5331-00-869-3638
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1801490 ITEM NO. 405 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: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 6.961 INCHES MINIMUM AND 7.007 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 7.214 INCHES MINIMUM AND 7.310 INCHES MAXIMUM IN
•
ELONGATION PERCENTAGE: 331 MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
TEMP RATING-30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
CENTER HOLE DIAMETER6.961 INCHES MINIMUM AND 7.007 INCHES MAXIMUM IN
OUTSIDE DIAMETER7.214 INCHES MINIMUM AND 7.310 INCHES MAXIMUM IN
ELONGATION PERCENTAGE331 MAXIMUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
2-262E663-8Interchangeable
interchangeable cross-reference
interchangeable
AS568-262Interchangeable
interchangeable cross-reference
interchangeable
637477Interchangeable
interchangeable cross-reference
interchangeable
2-262N304-7Interchangeable
interchangeable cross-reference
interchangeable
AN6230-40Interchangeable
interchangeable cross-reference
interchangeable
5331PL0900506Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1801490 ITEM NO. 405?
1801490 ITEM NO. 405 is a 1801490 ITEM NO. 405.
What parts can replace 1801490 ITEM NO. 405?
There are 10 known substitutes for 1801490 ITEM NO. 405: 2-262E663-8, AS568-262, 637477 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1801490 ITEM NO. 405?
1801490 ITEM NO. 405 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-869-3638. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026