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Technical Data Sheet
PartsTable / O-RING / 40490-9 FIND NO 9
40490-9 FIND NO 9 ✓ 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 SYNTHETIC, temp_rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF, hardness_rating: 75.0 SHORE DUROMETER A NOMINAL, outside_diameter: 1.512 INCHES NOMINAL IN, center_hole_diameter: 1.222 INCHES MINIMUM AND 1.246 INCHES MAXIMUM IN, elongation_percentage: 125 MAXIMUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-123-3302, 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
40490-9 FIND NO 9
NSN: 5331-01-123-3302
FSC: 5331 — O-RING
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
temp_rating-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
hardness_rating75.0 SHORE DUROMETER A NOMINAL
outside_diameter1.512 INCHES NOMINAL IN
center_hole_diameter1.222 INCHES MINIMUM AND 1.246 INCHES MAXIMUM IN
elongation_percentage125 MAXIMUM
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
NSN5331-01-123-3302
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 40490-9 FIND NO 9 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
•
HARDNESS RATING: 75.0 SHORE DUROMETER A NOMINAL
•
CENTER HOLE DIAMETER: 1.222 INCHES MINIMUM AND 1.246 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 1.512 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
TEMP RATING: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
•
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING75.0 SHORE DUROMETER A NOMINAL
CENTER HOLE DIAMETER1.222 INCHES MINIMUM AND 1.246 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.512 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
ELONGATION PERCENTAGE125 MAXIMUM
TEMP RATING-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
MATERIALRUBBER SYNTHETIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
7500-1Interchangeable
interchangeable cross-reference
interchangeable
425566Interchangeable
interchangeable cross-reference
interchangeable
5952-6Interchangeable
interchangeable cross-reference
interchangeable
A7-500-1Interchangeable
interchangeable cross-reference
interchangeable
D904 ITEM9Interchangeable
interchangeable cross-reference
interchangeable
D904Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40490-9 FIND NO 9?
40490-9 FIND NO 9 is a O-RING.
What parts can replace 40490-9 FIND NO 9?
There are 16 known substitutes for 40490-9 FIND NO 9: 7500-1, 425566, 5952-6 and 13 more. Substitute compatibility should be verified for your specific system.
Is 40490-9 FIND NO 9 still available?
40490-9 FIND NO 9 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