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2574737-5 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

2574737-5: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER OVERALL, center_hole_diameter: 1.239 INCHES NOMINAL IN, end_item_identification: MK46 MOD5 A. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-418-2151, 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
2574737-5
NSN: 5331-00-418-2151
NIINs: 004182151, 016563045
FSC: 5331 — O-ring
CAGE: 02697 — PARKER-HANNIFIN CORP DIV O-RING DIVISION (USA)
SPECIFICATIONS
materialRUBBER OVERALL
center_hole_diameter1.239 INCHES NOMINAL IN
end_item_identificationMK46 MOD5 A
NSN5331-00-418-2151
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2574737-5 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: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
CENTER HOLE DIAMETER: 1.233 INCHES MINIMUM AND 1.245 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
CENTER HOLE DIAMETER1.233 INCHES MINIMUM AND 1.245 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
SUBSTITUTES & CROSS-REFERENCES 4
257437-5Reference document
Same NSN cross-reference
Reference document — Secondary reference
31.47X1.78 20A7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
N219-1-239-070-70DURReference document
Same NSN cross-reference
Reference document — Secondary reference
9452K113Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2574737-5?
2574737-5 is a O-RING.
What parts can replace 2574737-5?
There are 4 known substitutes for 2574737-5: 257437-5, 31.47X1.78 20A7, N219-1-239-070-70DUR and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2574737-5?
2574737-5 is cataloged in the U.S. Government catalog under NSN 5331-00-418-2151. 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.