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Technical Data Sheet
PartsTable / COMPONENT / SC2-12
SC2-12 ✓ 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 COUPLING,SHAFT,RIGID is a the manufacturer industrial component. Key specifications include bore_shape: STRAIGHT BOTH ENDS, bore_length: 0.500 INCHES NOMINAL BOTH ENDS IN, body_material: STEEL, bore_diameter: 0.750 INCHES NOMINAL BOTH ENDS IN, overall_diameter: 1.500 INCHES NOMINAL IN, special_features: HEX SOCKET CUP POINT 3A THREAD SCREWS A. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-840-1643, 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
SC2-12
NSN: 5340-00-840-1643
FSC: 5340
CAGE: 95760 — PROTECTIVE CLOSURES CO INC (USA)
SPECIFICATIONS
bore_shapeSTRAIGHT BOTH ENDS
bore_length0.500 INCHES NOMINAL BOTH ENDS IN
body_materialSTEEL
bore_diameter0.750 INCHES NOMINAL BOTH ENDS IN
overall_diameter1.500 INCHES NOMINAL IN
special_featuresHEX SOCKET CUP POINT 3A THREAD SCREWS A
style_designatorPLAIN SLEEVE
end_item_identificationCRANE ASSEMBLY
part_name_assigned_by_controlling_agencyCOLLAR, SHAFT
NSN5340-00-840-1643
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: SC2-12 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 15
227Upgraded Successor
successor cross-reference
successor
2877827Upgraded Successor
successor cross-reference
successor
B8048PC9Interchangeable
interchangeable cross-reference
interchangeable
A212Interchangeable
interchangeable cross-reference
interchangeable
A1Interchangeable
interchangeable cross-reference
interchangeable
10-2107Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SC2-12?
SC2-12 is a COUPLING,SHAFT,RIGID.
What parts can replace SC2-12?
There are 15 known substitutes for SC2-12: 227, 2877827, B8048PC9 and 12 more. Substitute compatibility should be verified for your specific system.
Is SC2-12 still available?
SC2-12 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026