PartsTable
Technical Data Sheet
1820878C2 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The O-RING is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-547-4611, 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
1820878C2
NSN: 5331-01-547-4611
FSC: 5331 — O-RING
CAGE: 338X5 — ND DEFENSE LLC (USA)
SPECIFICATIONS
Part Number1820878C2
NSN5331-01-547-4611
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1820878C2 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
EMD-1444Interchangeable
interchangeable cross-reference
interchangeable
1831211C1Interchangeable
interchangeable cross-reference
interchangeable
VA151 2-109-T05Interchangeable
interchangeable cross-reference
interchangeable
1818402C2Interchangeable
interchangeable cross-reference
interchangeable
1841581C1Interchangeable
interchangeable cross-reference
interchangeable
1823790C1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1820878C2?
1820878C2 is a O-RING.
What parts can replace 1820878C2?
There are 12 known substitutes for 1820878C2: EMD-1444, 1831211C1, VA151 2-109-T05 and 9 more. Substitute compatibility should be verified for your specific system.
Is 1820878C2 still available?
1820878C2 is currently cancelled.
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