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Technical Data Sheet
PartsTable / O-RING / SM-251 FIGURE 10INDEX 3-16
SM-251 FIGURE 10INDEX 3-16 ✓ 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 5331-00-580-6581, 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
SM-251 FIGURE 10INDEX 3-16
NSN: 5331-00-580-6581
FSC: 5331 — O-RING
CAGE: 21439 — CURTISS-WRIGHT FLOW CONTROL SERVICE, LLC DBA ENGINEERED ARRESTING SYSTEMS - ESCO DIV CW FLOW CONTROL SVC LLC DBA (USA)
SPECIFICATIONS
Part NumberSM-251 FIGURE 10INDEX 3-16
NSN5331-00-580-6581
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: SM-251 FIGURE 10INDEX 3-16 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 22
2155Interchangeable
interchangeable cross-reference
interchangeable
1617823Interchangeable
interchangeable cross-reference
interchangeable
BUWEPSDWG1617823Interchangeable
interchangeable cross-reference
interchangeable
MS35333-113Interchangeable
interchangeable cross-reference
interchangeable
MILW6986TYPEAInterchangeable
interchangeable cross-reference
interchangeable
13230E6743Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SM-251 FIGURE 10INDEX 3-16?
SM-251 FIGURE 10INDEX 3-16 is a O-RING.
What parts can replace SM-251 FIGURE 10INDEX 3-16?
There are 22 known substitutes for SM-251 FIGURE 10INDEX 3-16: 2155, 1617823, BUWEPSDWG1617823 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SM-251 FIGURE 10INDEX 3-16?
SM-251 FIGURE 10INDEX 3-16 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-580-6581. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026