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15-4018 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

15-4018: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: ASBESTOS CHRYSOTILE AND RUBBER NATURAL OR RUBBER SYNTHETIC OVERALL, hole_diameter: 6.812 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, outside_diameter: 10.625 INCHES NOMINAL IN, aperture_diameter: 7.375 INCHES NOMINAL IN, bolt_circle_diameter: 8.750 INCHES NOMINAL IN, cross-sectional_thickness: 0.062 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-599-6573, 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
15-4018
NSN: 5331-00-599-6573
NIINs: 005996573, 007054990, 008527347, 010800748, 012195327
FSC: 5331 — O-ring
CAGE: 62983 — EATON AEROSPACE, LLC DBA JACKSON SOUTH (USA)
SPECIFICATIONS
materialASBESTOS CHRYSOTILE AND RUBBER NATURAL OR RUBBER SYNTHETIC OVERALL
hole_diameter6.812 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
outside_diameter10.625 INCHES NOMINAL IN
aperture_diameter7.375 INCHES NOMINAL IN
bolt_hole_quantity6
bolt_circle_diameter8.750 INCHES NOMINAL IN
cross-sectional_thickness0.062 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationHH-P-46 MIL SPEC ALL MATERIAL RESPONSES OVERALL
NSN5331-00-599-6573
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 15-4018 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
•
CROSS-SECTIONAL HEIGHT: 0.139 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.139 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
SUBSTITUTES & CROSS-REFERENCES 1
C-154018Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 15-4018?
15-4018 is a O-RING.
What parts can replace 15-4018?
There is 1 known substitute for 15-4018: C-154018. Substitute compatibility should be verified for your specific system.
What is the NSN for 15-4018?
15-4018 is cataloged in the U.S. Government catalog under NSN 5331-00-599-6573. 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.