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140259 — 140259

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

140259: 140259.

The 140259 is a the manufacturer industrial component. Key specifications include width: 1.000 INCHES NOMINAL IN, material: STEEL, ear_width: 0.300 INCHES NOMINAL IN, body_width: 0.250 INCHES NOMINAL IN, plate_thickness: 0.035 INCHES MINIMUM AND 0.048 INCHES MAXIMUM IN, style_designator: STRAIGHT. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-246-6569, 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
140259
NSN: 5340-00-246-6569
NIINs: 002466569, 011041388
FSC: 5340 — Hardware, Commercial
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
width1.000 INCHES NOMINAL IN
materialSTEEL
ear_width0.300 INCHES NOMINAL IN
body_width0.250 INCHES NOMINAL IN
plate_thickness0.035 INCHES MINIMUM AND 0.048 INCHES MAXIMUM IN
style_designatorSTRAIGHT
mounting_hole_diameter0.450 INCHES NOMINAL IN
angle_between_ears_in_deg90.0
cross-sectional_shape_styleFLAT
distance_between_mounting_hole_centers2.815 INCHES MINIMUM AND 2.835 INCHES MAXIMUM IN
angle_from_horizontal_centerline_to_ear_in_deg45.0
NSN5340-00-246-6569
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 140259 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
•
PLATE THICKNESS: 0.035 INCHES MINIMUM AND 0.048 INCHES MAXIMUM IN
•
DISTANCE BETWEEN MOUNTING HOLE CENTERS: 2.815 INCHES MINIMUM AND 2.835 INCHES MAXIMUM IN
•
ANGLE BETWEEN EARS IN DEG: 90.0
•
BODY WIDTH: 0.250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT
•
MOUNTING HOLE DIAMETER: 0.450 INCHES NOMINAL IN
•
ANGLE FROM HORIZONTAL CENTERLINE TO EAR IN DEG: 45.0
•
CROSS-SECTIONAL SHAPE STYLE: FLAT
TECHNICAL CHARACTERISTICS
PLATE THICKNESS0.035 INCHES MINIMUM AND 0.048 INCHES MAXIMUM IN
DISTANCE BETWEEN MOUNTING HOLE CENTERS2.815 INCHES MINIMUM AND 2.835 INCHES MAXIMUM IN
ANGLE BETWEEN EARS IN DEG90.0
BODY WIDTH0.250 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT
MOUNTING HOLE DIAMETER0.450 INCHES NOMINAL IN
ANGLE FROM HORIZONTAL CENTERLINE TO EAR IN DEG45.0
CROSS-SECTIONAL SHAPE STYLEFLAT
WIDTH1.000 INCHES NOMINAL IN
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 140259?
140259 is a 140259.
What is the NSN for 140259?
140259 is cataloged in the U.S. Government catalog under NSN 5340-00-246-6569. 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.