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Technical Data Sheet
PartsTable / O-RING / N304-75-427
N304-75-427 ✓ 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 BUTADIENE-ACRYLONITRILE CLASS NBR, outside_diameter: 5.230 INCHES MINIMUM AND 5.320 INCHES MAXIMUM IN, center_hole_diameter: 4.710 INCHES MINIMUM AND 4.740 INCHES MAXIMUM IN, cross-sectional_height: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-579-3160, 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
N304-75-427
NSN: 5331-00-579-3160
FSC: 5331 — O-RING
CAGE: 02697 — PARKER-HANNIFIN CORP DIV O-RING DIVISION (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
outside_diameter5.230 INCHES MINIMUM AND 5.320 INCHES MAXIMUM IN
center_hole_diameter4.710 INCHES MINIMUM AND 4.740 INCHES MAXIMUM IN
cross-sectional_height0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
NSN5331-00-579-3160
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: N304-75-427 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 BUTADIENE-ACRYLONITRILE CLASS NBR
•
CENTER HOLE DIAMETER: 4.710 INCHES MINIMUM AND 4.740 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 5.230 INCHES MINIMUM AND 5.320 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CENTER HOLE DIAMETER4.710 INCHES MINIMUM AND 4.740 INCHES MAXIMUM IN
OUTSIDE DIAMETER5.230 INCHES MINIMUM AND 5.320 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
7377427Interchangeable
interchangeable cross-reference
interchangeable
3661341Interchangeable
interchangeable cross-reference
interchangeable
622754Interchangeable
interchangeable cross-reference
interchangeable
8327984Interchangeable
interchangeable cross-reference
interchangeable
M2025429Interchangeable
interchangeable cross-reference
interchangeable
AMS-P-83461Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N304-75-427?
N304-75-427 is a O-RING.
What parts can replace N304-75-427?
There are 16 known substitutes for N304-75-427: 7377427, 3661341, 622754 and 13 more. Substitute compatibility should be verified for your specific system.
Is N304-75-427 still available?
N304-75-427 is currently cancelled.
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Last verified: July 2026