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A6766 ✓ 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 REACTOR is a the manufacturer industrial component. Key specifications include body_width: 4.000 INCHES NOMINAL IN, body_height: 4.880 INCHES NOMINAL IN, body_length: 4.620 INCHES NOMINAL IN, rating_method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING, inclosure_type: FULLY INCLOSED, inductance_type: FIXED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-530-4045, 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
A6766
NSN: 5340-00-530-4045
FSC: 5340
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
body_width4.000 INCHES NOMINAL IN
body_height4.880 INCHES NOMINAL IN
body_length4.620 INCHES NOMINAL IN
rating_methodELECTRICAL SINGLE COMPONENT SINGLE WINDING
inclosure_typeFULLY INCLOSED
inductance_typeFIXED
mounting_methodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
frequency_rating400.0 HERTZ NOMINAL SINGLE COMPONENT
winding_quantity1 SINGLE COMPONENT
inductance_rating2.00 HENRY MAXIMUM SINGLE COMPONENT SINGLE WINDING
reliability_indicatorNOT ESTABLISHED
mounting_hole_diameter0.307 INCHES MINIMUM AND 0.318 INCHES MAXIMUM SINGLE GROUP IN
NSN5340-00-530-4045
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A6766 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
27214Upgraded Successor
successor cross-reference
successor
427-8136Interchangeable
interchangeable cross-reference
interchangeable
141-56Interchangeable
interchangeable cross-reference
interchangeable
318145Interchangeable
interchangeable cross-reference
interchangeable
46717Interchangeable
interchangeable cross-reference
interchangeable
EA157Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A6766?
A6766 is a REACTOR.
What parts can replace A6766?
There are 19 known substitutes for A6766: 27214, 427-8136, 141-56 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A6766?
A6766 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-530-4045. 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