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Technical Data Sheet
PartsTable / COMPONENT / A12-54
A12-54 ✓ 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 SPRING,HELICAL,COMPRESSION is a the manufacturer industrial component. Key specifications include end_item_identification: ALTERNATOR,MOTOROLA,MODEL 8SC3014U. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-285-1346, 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
A12-54
NSN: 5330-00-285-1346
FSC: 5330
CAGE: 35301 — DRESSER INDUSTRIES INC LEROI DIV (USA)
SPECIFICATIONS
end_item_identificationALTERNATOR,MOTOROLA,MODEL 8SC3014U
NSN5330-00-285-1346
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A12-54 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
KEY FEATURES
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 3000 FEET PER MINUTE FT
•
MATERIAL: RUBBER SYNTHETIC SEALING ELEMENT
•
HOUSING BORE DIAMETER: 2.374 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 2.378 INCHES NOMINAL IN
•
SURFACE TREATMENT: PLASTIC CASE
•
SEALING ELEMENT STYLE: ANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
CASE STYLESQUARE
ACCOMMODATED SHAFT MAXIMUM RATED SPEED3000 FEET PER MINUTE FT
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
HOUSING BORE DIAMETER2.374 INCHES NOMINAL IN
OUTSIDE DIAMETER2.378 INCHES NOMINAL IN
MATERIALSTEEL CASE
SURFACE TREATMENTPLASTIC CASE
SEALING ELEMENT STYLEANGULAR
SEAL WIDTH0.500 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER1.375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
13738Interchangeable
interchangeable cross-reference
interchangeable
CH-7402K3Interchangeable
interchangeable cross-reference
interchangeable
7402Interchangeable
interchangeable cross-reference
interchangeable
152023C-2Interchangeable
interchangeable cross-reference
interchangeable
689Interchangeable
interchangeable cross-reference
interchangeable
DD5276Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A12-54?
A12-54 is a SPRING,HELICAL,COMPRESSION.
What parts can replace A12-54?
There are 27 known substitutes for A12-54: 13738, CH-7402K3, 7402 and 24 more. Substitute compatibility should be verified for your specific system.
Is A12-54 still available?
A12-54 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