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Technical Data Sheet
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320493 ✓ 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 CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include end_item_identification: PUMP ASSY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-374-1831, 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
320493
NSN: 5340-00-374-1831
FSC: 5340
CAGE: 23705 — FRUEHAUF CORP (USA)
SPECIFICATIONS
end_item_identificationPUMP ASSY
NSN5340-00-374-1831
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 320493 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
•
MATERIAL THICKNESS: 0.094 INCHES NOMINAL IN
•
MATERIAL: STEEL LOCATION NOT OTHERWISE SPECIFIED
•
STYLE DESIGNATOR: CURVED ARCH
•
CENTER TO CENTER DISTANCE BETWEEN ARCH AND MOUNTING HOLE: 0.750 INCHES NOMINAL IN
•
CUSHION: NOT INCLUDED
•
MOUNTING PAD: NOT INCLUDED
•
DISTANCE BETWEEN BASE AND INSIDE OF ARCH: 0.500 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.094 INCHES NOMINAL IN
MATERIALSTEEL LOCATION NOT OTHERWISE SPECIFIED
STYLE DESIGNATORCURVED ARCH
CENTER TO CENTER DISTANCE BETWEEN ARCH AND MOUNTING HOLE0.750 INCHES NOMINAL IN
CUSHIONNOT INCLUDED
MOUNTING PADNOT INCLUDED
DISTANCE BETWEEN BASE AND INSIDE OF ARCH0.500 INCHES NOMINAL IN
OVERALL WIDTH0.625 INCHES NOMINAL IN
MOUNTING HOLE SIZE0.250 INCHES NOMINAL IN
OVERALL LENGTH1.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
7430339P1Upgraded Successor
successor cross-reference
successor
63-0173Upgraded Successor
successor cross-reference
successor
402D3452AUpgraded Successor
successor cross-reference
successor
320493Interchangeable
interchangeable cross-reference
interchangeable
320493-1Interchangeable
interchangeable cross-reference
interchangeable
P511021 REV A ITEM 90Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 320493?
320493 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 320493?
There are 6 known substitutes for 320493: 7430339P1, 63-0173, 402D3452A and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 320493?
320493 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-374-1831. 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