PartsTable
Technical Data Sheet
12 1/2 ✓ 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 12 1/2 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 5340-01-044-2544, 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
12 1/2
NSN: 5340-01-044-2544
FSC: 5340
CAGE: 66821 — YALE SECURITY INC. DBA NORTON DOOR CONTROL (USA)
SPECIFICATIONS
Part Number12 1/2
NSN5340-01-044-2544
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12 1/2 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
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESBRASS OR NICKEL SILVER;
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
481217-2Upgraded Successor
successor cross-reference
successor
121-2Upgraded Successor
successor cross-reference
successor
17251Upgraded Successor
successor cross-reference
successor
7EInterchangeable
interchangeable cross-reference
interchangeable
60S907E-00Interchangeable
interchangeable cross-reference
interchangeable
3U457-60S907E-00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12 1/2?
12 1/2 is a 12 1/2.
What parts can replace 12 1/2?
There are 11 known substitutes for 12 1/2: 481217-2, 121-2, 17251 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12 1/2?
12 1/2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-044-2544. This indicates validated use in U.S. government and defense supply chains.
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