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2507294-81 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

2507294-81: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, center_hole_diameter: 4.207 INCHES MINIMUM AND 4.267 INCHES MAXIMUM IN, cross-sectional_height: 0.100 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-031-8232, 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
2507294-81
NSN: 5331-01-031-8232
FSC: 5331 — O-ring
CAGE: 02697 — PARKER-HANNIFIN CORP DIV O-RING DIVISION (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
center_hole_diameter4.207 INCHES MINIMUM AND 4.267 INCHES MAXIMUM IN
cross-sectional_height0.100 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
NSN5331-01-031-8232
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2507294-81 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: 0.100 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 4.207 INCHES MINIMUM AND 4.267 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
CENTER HOLE DIAMETER4.207 INCHES MINIMUM AND 4.267 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
SUBSTITUTES & CROSS-REFERENCES 2
2-156 N674-7Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
P49708-0156Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2507294-81?
2507294-81 is a O-RING.
What parts can replace 2507294-81?
There are 2 known substitutes for 2507294-81: 2-156 N674-7, P49708-0156. Substitute compatibility should be verified for your specific system.
What is the NSN for 2507294-81?
2507294-81 is cataloged in the U.S. Government catalog under NSN 5331-01-031-8232. 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.