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Technical Data Sheet
37591 ✓ 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 ASSEMBLY 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: RUBBER SYNTHETIC SEALING ELEMENT, case_style: SQUARE, seal_width: 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN, temp_rating: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF, overall_width: 0.250 INCHES NOMINAL IN, component_name: FIXED MICA DIELECTRIC. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-406-0552, 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 37591
NSN: 5330-00-406-0552
FSC: 5330
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEALING ELEMENT
case_styleSQUARE
seal_width0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN
temp_rating-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
overall_width0.250 INCHES NOMINAL IN
component_nameFIXED MICA DIELECTRIC
overall_height1.500 INCHES NOMINAL IN
overall_length0.250 INCHES MAXIMUM IN
transfer_ratio30.0 NOMINAL STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER
mounting_methodTERMINAL
terminal_length0.400 INCHES MINIMUM IN
overall_diameter0.215 INCHES MAXIMUM IN
NSN5330-00-406-0552
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 37591 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: STEEL COMP 1005 OR STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 CASE
TEMP RATING: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
CASE STYLE: SQUARE
SEAL WIDTH: 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN
ACCOMMODATED SHAFT DIAMETER: 3.750 INCHES NOMINAL IN
SEALING ELEMENT STYLE: ANGULAR
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)
MATERIALSTEEL COMP 1005 OR STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 CASE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
TEMP RATING-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
SPECIAL FEATURESWITH PROTECTIVE INNER CASE
CASE STYLESQUARE
SEAL WIDTH0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN
ACCOMMODATED SHAFT DIAMETER3.750 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
HOUSING BORE DIAMETER5.2495 INCHES MINIMUM AND 5.2525 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
14327Interchangeable
interchangeable cross-reference
interchangeable
37591Interchangeable
interchangeable cross-reference
interchangeable
51245Interchangeable
interchangeable cross-reference
interchangeable
2N3640Interchangeable
interchangeable cross-reference
interchangeable
28431-766Interchangeable
interchangeable cross-reference
interchangeable
D10297Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 37591?
37591 is a CAPACITOR ASSEMBLY. It is classified as a MRO (MRO_GENERAL).
What parts can replace 37591?
There are 9 known substitutes for 37591: 14327, 37591, 51245 and 6 more. Substitute compatibility should be verified for your specific system.
Is 37591 still available?
37591 is currently cancelled.
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