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Technical Data Sheet
PartsTable / O-RING / NAS1611-439
NAS1611-439 ✓ 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: 6.452 INCHES MINIMUM AND 6.498 INCHES MAXIMUM IN, cross-sectional_height: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN, material_document_and_classification: NAS1613 ASSN STD SINGLE MATERIAL RESPONSE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-326-9281, 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
NAS1611-439
NSN: 5331-01-326-9281
FSC: 5331 — O-RING
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialRUBBER ETHYLENE-PROPYLENE CLASS EPM
center_hole_diameter6.452 INCHES MINIMUM AND 6.498 INCHES MAXIMUM IN
cross-sectional_height0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
material_document_and_classificationNAS1613 ASSN STD SINGLE MATERIAL RESPONSE
NSN5331-01-326-9281
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: NAS1611-439 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: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
•
MATERIAL: RUBBER ETHYLENE-PROPYLENE CLASS EPM
•
CENTER HOLE DIAMETER: 6.452 INCHES MINIMUM AND 6.498 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: NAS1613 ASSN STD SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
MATERIALRUBBER ETHYLENE-PROPYLENE CLASS EPM
CENTER HOLE DIAMETER6.452 INCHES MINIMUM AND 6.498 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONNAS1613 ASSN STD SINGLE MATERIAL RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
02439Interchangeable
interchangeable cross-reference
interchangeable
6002-561Interchangeable
interchangeable cross-reference
interchangeable
2439Interchangeable
interchangeable cross-reference
interchangeable
2402536Interchangeable
interchangeable cross-reference
interchangeable
85850BInterchangeable
interchangeable cross-reference
interchangeable
M3081Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS1611-439?
NAS1611-439 is a O-RING.
What parts can replace NAS1611-439?
There are 19 known substitutes for NAS1611-439: 02439, 6002-561, 2439 and 16 more. Substitute compatibility should be verified for your specific system.
Is NAS1611-439 still available?
NAS1611-439 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026