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Technical Data Sheet
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L549 ✓ 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 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 phase: SINGLE, material: PLASTIC, color_cup: INCLUDED, face_type: DOUBLE OR SINGLE, body_style: BARRIER TYPE, body_width: 0.953 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-006-1390, 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
L549
NSN: 5330-00-006-1390
FSC: 5330
CAGE: 81085 — LEE ENGINEERING CO INC (USA)
SPECIFICATIONS
phaseSINGLE
materialPLASTIC
color_cupINCLUDED
face_typeDOUBLE OR SINGLE
body_styleBARRIER TYPE
body_width0.953 INCHES MAXIMUM IN
shank_typeNONROTATING
body_height1.438 INCHES MAXIMUM IN
body_length1.406 INCHES MAXIMUM IN
design_typeCOLLET
shank_styleINTERNALLY THREADED W/HEXAGON END AND INSPECTION HOLE
color_bottleINCLUDED
NSN5330-00-006-1390
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: L549 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
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
T 20334Interchangeable
interchangeable cross-reference
interchangeable
2M049Interchangeable
interchangeable cross-reference
interchangeable
L549Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is L549?
L549 is a CAPACITOR,FIXED,ELECTROLYTIC.
What parts can replace L549?
There are 3 known substitutes for L549: T 20334, 2M049, L549. Substitute compatibility should be verified for your specific system.
What is the NSN for L549?
L549 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-006-1390. 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