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Technical Data Sheet
PartsTable / MRO / 1B1057
1B1057 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The CAPACITOR,FIXED,ELECTROLYTIC is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include material: STEEL CASE, anode_type: PLAIN FOIL, body_style: W/O MTG FACILITIES, AXIAL TERMINALS, case_style: SQUARE, seal_width: 0.438 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, body_length: 2.031 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-292-1593, 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
MRO→ MRO_GENERAL→ 1B1057
NSN: 5330-00-292-1593
FSC: 5330
CAGE: 14544 — PETTIBONE WESTRAC (USA)
SPECIFICATIONS
materialSTEEL CASE
anode_typePLAIN FOIL
body_styleW/O MTG FACILITIES, AXIAL TERMINALS
case_styleSQUARE
seal_width0.438 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
body_length2.031 INCHES NOMINAL IN
body_diameter1.016 INCHES NOMINAL IN
terminal_length3.000 INCHES NOMINAL IN
terminal_diameter0.040 INCHES NOMINAL IN
housing_bore_diameter3.350 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
sealing_element_styleANGULAR
NSN5330-00-292-1593
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1B1057 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
•
ACCOMMODATED SHAFT DIAMETER: 2.250 INCHES NOMINAL IN
•
CASE STYLE: SQUARE
•
MATERIAL: STEEL CASE
•
HOUSING BORE DIAMETER: 3.350 INCHES NOMINAL IN
•
SEAL WIDTH: 0.438 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
SEALING ELEMENT STYLE: ANGULAR
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT DIAMETER2.250 INCHES NOMINAL IN
CASE STYLESQUARE
MATERIALSTEEL CASE
HOUSING BORE DIAMETER3.350 INCHES NOMINAL IN
SEAL WIDTH0.438 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
SEALING ELEMENT STYLEANGULAR
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
MATERIALLEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
16P96Interchangeable
interchangeable cross-reference
interchangeable
900123-0036Interchangeable
interchangeable cross-reference
interchangeable
12522Interchangeable
interchangeable cross-reference
interchangeable
1497Interchangeable
interchangeable cross-reference
interchangeable
13889-13836Interchangeable
interchangeable cross-reference
interchangeable
FFB187TYPE751Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1B1057?
1B1057 is a CAPACITOR,FIXED,ELECTROLYTIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 1B1057?
There are 25 known substitutes for 1B1057: 16P96, 900123-0036, 12522 and 22 more. Substitute compatibility should be verified for your specific system.
Is 1B1057 still available?
1B1057 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