PartsTable
Technical Data Sheet
20-90512 ✓ 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: RUBBER FLUOROCARBON CLASS FPM, anode_type: PLAIN FOIL, body_style: W/O MTG FACILITIES, TERMINAL(S) ON ONE END, body_length: 3.250 INCHES NOMINAL IN, body_diameter: 1.375 INCHES NOMINAL IN, hardness_rating: 75.0 SHORE DUROMETER A NOMINAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-167-5166, 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 20-90512
NSN: 5331-00-167-5166
FSC: 5331 — O-RING
CAGE: 24235 — WILLIAMS INTERNATIONAL CO., L.L.C. (USA)
SPECIFICATIONS
materialRUBBER FLUOROCARBON CLASS FPM
anode_typePLAIN FOIL
body_styleW/O MTG FACILITIES, TERMINAL(S) ON ONE END
body_length3.250 INCHES NOMINAL IN
body_diameter1.375 INCHES NOMINAL IN
hardness_rating75.0 SHORE DUROMETER A NOMINAL
outside_diameter0.547 INCHES MINIMUM AND 0.569 INCHES MAXIMUM IN
nominal_thread_size0.190 INCHES IN
center_hole_diameter0.409 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN
elongation_percentage125 MAXIMUM
reliability_indicatorNOT ESTABLISHED
cross-sectional_height0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
NSN5331-00-167-5166
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 20-90512 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
CROSS-SECTIONAL HEIGHT: 0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
OUTSIDE DIAMETER: 0.547 INCHES MINIMUM AND 0.569 INCHES MAXIMUM IN
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
HARDNESS RATING: 75.0 SHORE DUROMETER A NOMINAL
ELONGATION PERCENTAGE: 125 MAXIMUM
CENTER HOLE DIAMETER: 0.409 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN
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)
END ITEM IDENTIFICATIONSTREAM (STD. TENSIONED REPLENISHMENT AT SEA METHOD); ELEVATORS, AIRCRAFT; AIRCRAFT, AIRLIFTER C-17A; BOILERS, 1200 PSI; AIRCRAFT, SOF ( AC-130H, MC-130H, EC-130E, HC-130); SUPPORT EQUIPMENT, B-1 AIRCRAFT; L.P. COMPRESSORS; STERN GATES; SYSTEMS, 02N2; SAS (STARTING AIR SYS), FFG-7; 2320-01-097-0260 HEMTT (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS) BAP (BRIDGE ADAPTER PALLET). A
CROSS-SECTIONAL HEIGHT0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.547 INCHES MINIMUM AND 0.569 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROCARBON CLASS FPM
HARDNESS RATING75.0 SHORE DUROMETER A NOMINAL
ELONGATION PERCENTAGE125 MAXIMUM
CENTER HOLE DIAMETER0.409 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
3905Interchangeable
interchangeable cross-reference
interchangeable
72-6970-960Interchangeable
interchangeable cross-reference
interchangeable
91T2128Interchangeable
interchangeable cross-reference
interchangeable
6905Interchangeable
interchangeable cross-reference
interchangeable
82-SInterchangeable
interchangeable cross-reference
interchangeable
5715MKInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20-90512?
20-90512 is a CAPACITOR,FIXED,ELECTROLYTIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 20-90512?
There are 29 known substitutes for 20-90512: 3905, 72-6970-960, 91T2128 and 26 more. Substitute compatibility should be verified for your specific system.
Is 20-90512 still available?
20-90512 is currently cancelled.
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