PartsTable
Technical Data Sheet
218143565 ✓ 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 product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-725-4249, 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
218143565
NSN: 5331-01-725-4249
FSC: 5331 — O-RING
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
Part Number218143565
NSN5331-01-725-4249
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 218143565 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
6583Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-781Interchangeable
interchangeable cross-reference
interchangeable
MS20658-3Interchangeable
interchangeable cross-reference
interchangeable
M6583-00131Interchangeable
interchangeable cross-reference
interchangeable
3110-78Interchangeable
interchangeable cross-reference
interchangeable
TT10657Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 218143565?
218143565 is a O-RING.
What parts can replace 218143565?
There are 12 known substitutes for 218143565: 6583, MIL-DTL-781, MS20658-3 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 218143565?
218143565 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-725-4249. This indicates validated use in U.S. government and defense supply chains.
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