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40127-2 ✓ Verified by PartsTable
Legrand · 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 TRANSFORMER,RADIO FREQUENCY is a Legrand industrial component. Key specifications include material: COPPER, body_length: 0.440 INCHES NOMINAL IN, construction: SOLID, rating_method: ELECTRICAL SINGLE COMPONENT SINGLE SECONDARY, coil_form_type: HOLLOW SINGLE COMPONENT, inclosure_type: FULLY INCLOSED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-350-5643, 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
40127-2
NSN: 5340-00-350-5643
FSC: 5340
CAGE: 65282 — WHITE MOTOR CORP (USA)
SPECIFICATIONS
materialCOPPER
body_length0.440 INCHES NOMINAL IN
constructionSOLID
rating_methodELECTRICAL SINGLE COMPONENT SINGLE SECONDARY
coil_form_typeHOLLOW SINGLE COMPONENT
inclosure_typeFULLY INCLOSED
mounting_methodTERMINAL SINGLE GROUP
frequency_rating25.0 MEGAHERTZ NOMINAL SINGLE COMPONENT
features_providedTINNED WIRE LEADS
inductance_rating0.54 MICROHENRIES MINIMUM AND 0.73 MICROHENRIES MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
center_hole_diameter0.357 INCHES MINIMUM AND 0.371 INCHES MAXIMUM IN
body_outside_diameter0.380 INCHES NOMINAL IN
NSN5340-00-350-5643
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 40127-2 MFR: Legrand ⚠ 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
666755-2Interchangeable
interchangeable cross-reference
interchangeable
CS6766Interchangeable
interchangeable cross-reference
interchangeable
40127-2Interchangeable
interchangeable cross-reference
interchangeable
406269Interchangeable
interchangeable cross-reference
interchangeable
5934521Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40127-2?
40127-2 is a TRANSFORMER,RADIO FREQUENCY manufactured by Legrand.
What parts can replace 40127-2?
There are 5 known substitutes for 40127-2: 666755-2, CS6766, 40127-2 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40127-2?
40127-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-350-5643. 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