PartsTable
Technical Data Sheet

8485940/FN3 — STOP,MECHANICAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

8485940/FN3: STOP,MECHANICAL.

The STOP,MECHANICAL is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-01-682-4885, 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
8485940/FN3
NSN: 5340-01-682-4885
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part Number8485940/FN3
NSN5340-01-682-4885
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 8485940/FN3 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 1
8485940Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 8485940/FN3?
8485940/FN3 is a STOP,MECHANICAL.
What parts can replace 8485940/FN3?
There is 1 known substitute for 8485940/FN3: 8485940. Substitute compatibility should be verified for your specific system.
What is the NSN for 8485940/FN3?
8485940/FN3 is cataloged in the U.S. Government catalog under NSN 5340-01-682-4885. This indicates validated use in U.S. government and defense supply chains.
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