PartsTable
Technical Data Sheet
218K337 ✓ 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 5331-00-589-5935, 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
218K337
NSN: 5331-00-589-5935
FSC: 5331 — O-RING
CAGE: 66821 — YALE SECURITY INC. DBA NORTON DOOR CONTROL (USA)
SPECIFICATIONS
Part Number218K337
NSN5331-00-589-5935
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 218K337 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 13
S718Interchangeable
interchangeable cross-reference
interchangeable
200034Interchangeable
interchangeable cross-reference
interchangeable
425276-4Interchangeable
interchangeable cross-reference
interchangeable
AMS-P-5516Interchangeable
interchangeable cross-reference
interchangeable
2200-771744REVAITEM105CInterchangeable
interchangeable cross-reference
interchangeable
P44Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 218K337?
218K337 is a O-RING.
What parts can replace 218K337?
There are 13 known substitutes for 218K337: S718, 200034, 425276-4 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 218K337?
218K337 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-589-5935. This indicates validated use in U.S. government and defense supply chains.
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