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Technical Data Sheet
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258-9867 — 258-9867

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

258-9867: 258-9867.

The 258-9867 is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-00-431-7301, 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
258-9867
NSN: 5340-00-431-7301
FSC: 5340 — Hardware, Commercial
CAGE: 11530 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN INFORMATION SYSTEMS & GLOBAL SOLUTIONS (USA)
SPECIFICATIONS
Part Number258-9867
NSN5340-00-431-7301
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 258-9867 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 3
21157Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
FT2239Reference document
Same NSN cross-reference
Reference document — Secondary reference
342A164Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 258-9867?
258-9867 is a 258-9867.
What parts can replace 258-9867?
There are 3 known substitutes for 258-9867: 21157, FT2239, 342A164. Substitute compatibility should be verified for your specific system.
What is the NSN for 258-9867?
258-9867 is cataloged in the U.S. Government catalog under NSN 5340-00-431-7301. This indicates validated use in U.S. government and defense supply chains.
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