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2530759 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

2530759: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER SILICONE CLASS Q, center_hole_diameter: 4.500 INCHES MINIMUM AND 4.778 INCHES MAXIMUM IN, cross-sectional_height: 0.139 INCHES NOMINAL IN, end_item_identification: MK 45, MOD 4, material_document_and_classification: AMS3304 ASSN STD SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-506-9813, 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
2530759
NSN: 5331-01-506-9813
FSC: 5331 — O-ring
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialRUBBER SILICONE CLASS Q
center_hole_diameter4.500 INCHES MINIMUM AND 4.778 INCHES MAXIMUM IN
cross-sectional_height0.139 INCHES NOMINAL IN
end_item_identificationMK 45, MOD 4
material_document_and_classificationAMS3304 ASSN STD SINGLE MATERIAL RESPONSE
NSN5331-01-506-9813
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2530759 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 DOCUMENT AND CLASSIFICATION: AMS3304 ASSN STD SINGLE MATERIAL RESPONSE
•
CENTER HOLE DIAMETER: 4.500 INCHES MINIMUM AND 4.778 INCHES MAXIMUM IN
•
MATERIAL: RUBBER SILICONE CLASS Q
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.139 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS3304 ASSN STD SINGLE MATERIAL RESPONSE
CENTER HOLE DIAMETER4.500 INCHES MINIMUM AND 4.778 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONMK 45, MOD 4
MATERIALRUBBER SILICONE CLASS Q
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2530759?
2530759 is a O-RING.
What is the NSN for 2530759?
2530759 is cataloged in the U.S. Government catalog under NSN 5331-01-506-9813. 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.