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31525-13 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

31525-13: O-RING.

The O-RING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5331-00-618-6025, 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
31525-13
NSN: 5331-00-618-6025
FSC: 5331 — O-ring
CAGE: 92435 — ALCO STANDARD CORP ALCO FOOD SERVICE EQUIPMENT CO ALCO DISPENSING SYSTEMS DIV (USA)
SPECIFICATIONS
Part Number31525-13
NSN5331-00-618-6025
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 31525-13 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
SUBSTITUTES & CROSS-REFERENCES 9
30-96501-0022Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
R93821Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
PRP568-007-4024-65Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
SAE-AS3578Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
2-007 N506-65Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
204805Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 31525-13?
31525-13 is a O-RING.
What parts can replace 31525-13?
There are 9 known substitutes for 31525-13: 30-96501-0022, R93821, PRP568-007-4024-65 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 31525-13?
31525-13 is cataloged in the U.S. Government catalog under NSN 5331-00-618-6025. 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.