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2603509-35 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

2603509-35: O-RING.

The O-RING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5331-01-474-1372, 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
2603509-35
NSN: 5331-01-474-1372
FSC: 5331 — O-ring
CAGE: 11243 — COSMODYNE, LLC DBA COSMODYNE LLC (USA)
SPECIFICATIONS
Part Number2603509-35
NSN5331-01-474-1372
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2603509-35 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
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES 3
83248-001Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
83248-001CPReference document
Same NSN cross-reference
Reference document — Secondary reference
2603509-35CPReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2603509-35?
2603509-35 is a O-RING.
What parts can replace 2603509-35?
There are 3 known substitutes for 2603509-35: 83248-001, 83248-001CP, 2603509-35CP. Substitute compatibility should be verified for your specific system.
What is the NSN for 2603509-35?
2603509-35 is cataloged in the U.S. Government catalog under NSN 5331-01-474-1372. 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.