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ORAR00144-N7T40 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

ORAR00144-N7T40: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE CLASS BR, temp_rating: -22.0 FAHRENHEIT AND 270.0 FAHRENHEIT DEGF, center_hole_diameter: 2.487 INCHES NOMINAL IN, cross-sectional_height: 0.103 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-643-7240, 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
ORAR00144-N7T40
NSN: 5331-01-643-7240
FSC: 5331 — O-ring
CAGE: 09257 — TRELLEBORG SEALING SOLUTIONS US, INC. (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE CLASS BR
temp_rating-22.0 FAHRENHEIT AND 270.0 FAHRENHEIT DEGF
center_hole_diameter2.487 INCHES NOMINAL IN
cross-sectional_height0.103 INCHES NOMINAL IN
NSN5331-01-643-7240
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ORAR00144-N7T40 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: -22.0 FAHRENHEIT AND 270.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.103 INCHES NOMINAL IN
•
COLOR: BLACK
•
CENTER HOLE DIAMETER: 2.487 INCHES NOMINAL IN
•
MATERIAL: RUBBER BUTADIENE CLASS BR
TECHNICAL CHARACTERISTICS
TEMP RATING-22.0 FAHRENHEIT AND 270.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.103 INCHES NOMINAL IN
COLORBLACK
CENTER HOLE DIAMETER2.487 INCHES NOMINAL IN
MATERIALRUBBER BUTADIENE CLASS BR
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ORAR00144-N7T40?
ORAR00144-N7T40 is a O-RING.
What is the NSN for ORAR00144-N7T40?
ORAR00144-N7T40 is cataloged in the U.S. Government catalog under NSN 5331-01-643-7240. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.