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Technical Data Sheet
PartsTable / O-RING / J72078AN2-9
J72078AN2-9 ✓ 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 ETHYLENE-PROPYLENE CLASS EPM, center_hole_diameter: 2.960 INCHES MINIMUM AND 3.008 INCHES MAXIMUM IN, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-021-4258, 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
J72078AN2-9
NSN: 5331-01-021-4258
FSC: 5331 — O-RING
CAGE: 96101 — GAS EQUIPMENT ENGINEERING CORPORATION, THE DBA GEECO (USA)
SPECIFICATIONS
materialRUBBER ETHYLENE-PROPYLENE CLASS EPM
center_hole_diameter2.960 INCHES MINIMUM AND 3.008 INCHES MAXIMUM IN
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
NSN5331-01-021-4258
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: J72078AN2-9 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
•
MATERIAL: RUBBER ETHYLENE-PROPYLENE CLASS EPM
•
CENTER HOLE DIAMETER: 2.960 INCHES MINIMUM AND 3.008 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER ETHYLENE-PROPYLENE CLASS EPM
CENTER HOLE DIAMETER2.960 INCHES MINIMUM AND 3.008 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
20119Interchangeable
interchangeable cross-reference
interchangeable
4098046-894Interchangeable
interchangeable cross-reference
interchangeable
567583Interchangeable
interchangeable cross-reference
interchangeable
53183Interchangeable
interchangeable cross-reference
interchangeable
2410 1-19/64Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-751Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is J72078AN2-9?
J72078AN2-9 is a O-RING.
What parts can replace J72078AN2-9?
There are 14 known substitutes for J72078AN2-9: 20119, 4098046-894, 567583 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for J72078AN2-9?
J72078AN2-9 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-021-4258. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026