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NAS1661-258 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

NAS1661-258: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include end_item_identification: NSN 1240-01-487-0870, PERISCOPE. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-487-8908, 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
NAS1661-258
NSN: 5331-01-487-8908
FSC: 5331 — O-ring
CAGE: 34228 — L3 TECHNOLOGIES, INC. DIV L3 KEO (USA)
SPECIFICATIONS
end_item_identificationNSN 1240-01-487-0870, PERISCOPE
NSN5331-01-487-8908
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: NAS1661-258 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
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONNSN 1240-01-487-0870, PERISCOPE
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is NAS1661-258?
NAS1661-258 is a O-RING.
What is the NSN for NAS1661-258?
NAS1661-258 is cataloged in the U.S. Government catalog under NSN 5331-01-487-8908. This indicates validated use in U.S. government and defense supply chains.
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