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172525 — CAPACITOR,FIXED,MICA DIELECTRIC

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

172525: CAPACITOR,FIXED,MICA DIELECTRIC.

CAPACITOR,FIXED,MICA DIELECTRIC. Key specifications include radius: 0.406 INCHES NOMINAL IN, material: STEEL, outside_diameter: 0.372 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN, style_designator: CONCAVE, material_thickness: 0.065 INCHES NOMINAL IN, fsc_application_data: TELETYPE AND FACSIMILE EQUIPMENT. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-197-0385, 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→ 172525
NSN: 5340-00-197-0385
NIINs: 001970385, 003174811, 006762360, 007399603
FSC: 5340 — Hardware, Commercial
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
radius0.406 INCHES NOMINAL IN
materialSTEEL
outside_diameter0.372 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
style_designatorCONCAVE
material_thickness0.065 INCHES NOMINAL IN
fsc_application_dataTELETYPE AND FACSIMILE EQUIPMENT
NSN5340-00-197-0385
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 172525 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
•
RADIUS: 0.406 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.372 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: CONCAVE
•
MATERIAL THICKNESS: 0.065 INCHES NOMINAL IN
•
MATERIAL: STEEL
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
RADIUS0.406 INCHES NOMINAL IN
OUTSIDE DIAMETER0.372 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
STYLE DESIGNATORCONCAVE
MATERIAL THICKNESS0.065 INCHES NOMINAL IN
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 7
02531Reference document
Same NSN cross-reference
Reference document — Secondary reference
103889Reference document
Same NSN cross-reference
Reference document — Secondary reference
303SZ21Reference document
Same NSN cross-reference
Reference document — Secondary reference
50104Reference document
Same NSN cross-reference
Reference document — Secondary reference
X981Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-P-20691Reference document
Same NSN cross-reference
Reference document — Identification reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 172525?
172525 is a CAPACITOR,FIXED,MICA DIELECTRIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 172525?
There are 7 known substitutes for 172525: 02531, 103889, 303SZ21 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 172525?
172525 is cataloged in the U.S. Government catalog under NSN 5340-00-197-0385. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.