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Technical Data Sheet
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18-94 — Technical Data Sheet

✓ 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

CAPACITOR,VARIABLE,GAS DIELECTRI. Key specifications include width: 4.000 INCHES NOMINAL IN, length: 500.000 FEET NOMINAL FT, material: RUBBER SYNTHETIC SEALING ELEMENT, base_color: WHITE, body_style: STRAIGHT SHAPE, case_style: RECESSED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5340-00-182-6770, 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→ 18-94
NSN: 5340-00-182-6770
FSC: 5340
CAGE: 91833 — KEYSTONE ELECTRONICS CORP (USA)
SPECIFICATIONS
width4.000 INCHES NOMINAL IN
length500.000 FEET NOMINAL FT
materialRUBBER SYNTHETIC SEALING ELEMENT
base_colorWHITE
body_styleSTRAIGHT SHAPE
case_styleRECESSED
seal_width0.375 INCHES NOMINAL IN
shell_typeSOLID
usage_formROLL
temp_rating225.0 FAHRENHEIT DEGF
body_diameter3.125 INCHES MAXIMUM IN
emulsion_typeBLACK AND WHITE
NSN5340-00-182-6770
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 18-94 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
•
LENGTH: 0.625 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY OVERALL
•
SURFACE TREATMENT: CHROMATE OVERALL
•
WIDTH ACROSS FLATS: 0.187 INCHES NOMINAL IN
•
STYLE DESIGNATOR: INTERNALLY THREADED FULL LENGTH
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE: HEXAGON
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
LENGTH0.625 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY OVERALL
SURFACE TREATMENTCHROMATE OVERALL
WIDTH ACROSS FLATS0.187 INCHES NOMINAL IN
STYLE DESIGNATORINTERNALLY THREADED FULL LENGTH
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
CROSS-SECTIONAL SHAPEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
UCSL1000-3D345InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
CVC10-1K3KVInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
PE9175InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1250-1786InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
911336-24InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1009DPC21InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 18-94?
18-94 is a CAPACITOR,VARIABLE,GAS DIELECTRI. It is classified as a MRO (MRO_GENERAL).
What parts can replace 18-94?
There are 18 known substitutes for 18-94: UCSL1000-3D345, CVC10-1K3KV, PE9175 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 18-94?
18-94 is cataloged in the Federal Logistics Information System under NSN 5340-00-182-6770. 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: September 2026