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818878 — 818878

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

818878: 818878.

The 818878 is a the manufacturer industrial component. Key specifications include skirt_design: DETACHABLE, style_designator: CROWN, attachment_method: UNTHREADED STUD, unthreaded_stud_style: ROUND, gripping_surface_condition: SMOOTH. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-070-1843, 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
818878
NSN: 5340-00-070-1843
NIINs: 000701843, 001063364
FSC: 5340 — Hardware, Commercial
CAGE: 98571 — TELEDYNE CONTROLS, LLC DBA TELEDYNE CONTROLS (USA)
SPECIFICATIONS
skirt_designDETACHABLE
style_designatorCROWN
attachment_methodUNTHREADED STUD
unthreaded_stud_styleROUND
gripping_surface_conditionSMOOTH
NSN5340-00-070-1843
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 818878 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
KEY FEATURES
•
WIDTH ACROSS FLATS: 0.187 INCHES NOMINAL IN
•
LENGTH: 2.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PROJECTION ONE END W/ RIGHT EXTERNAL THREAD
•
CROSS-SECTIONAL SHAPE: HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.187 INCHES NOMINAL IN
LENGTH2.125 INCHES NOMINAL IN
STYLE DESIGNATORPROJECTION ONE END W/ RIGHT EXTERNAL THREAD
CROSS-SECTIONAL SHAPEHEXAGON
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 818878?
818878 is a 818878.
What is the NSN for 818878?
818878 is cataloged in the U.S. Government catalog under NSN 5340-00-070-1843. 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.