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Technical Data Sheet
PartsTable / COMPONENT / 189386
189386 ✓ 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 TRANSFORMER,POWER is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 3003, drive_type: SERRATED OR SQUARE HEAD OR HEX SOCKET, design_type: THREADED, overall_diameter: 1.000 INCHES NOMINAL IN, surface_treatment: CHROMATE OR ANODIZE, nondefinitive_spec/std_data: 3 TYPE AND A CLASS AND 25 SIZE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-698-0432, 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
189386
NSN: 5340-00-698-0432
FSC: 5340
CAGE: 12763 — DYNALEC CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 3003
drive_typeSERRATED OR SQUARE HEAD OR HEX SOCKET
design_typeTHREADED
overall_diameter1.000 INCHES NOMINAL IN
surface_treatmentCHROMATE OR ANODIZE
nondefinitive_spec/std_data3 TYPE AND A CLASS AND 25 SIZE
material_document_and_classificationQQ-A-250/2 FED SPEC SINGLE MATERIAL RESPONSE
thread_size_and_series/type_designator1/2-20 NF
surface_treatment_document_and_classificationMIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE A
NSN5340-00-698-0432
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 189386 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 23
291Interchangeable
interchangeable cross-reference
interchangeable
293Interchangeable
interchangeable cross-reference
interchangeable
30039Interchangeable
interchangeable cross-reference
interchangeable
306065405Interchangeable
interchangeable cross-reference
interchangeable
F3U224NInterchangeable
interchangeable cross-reference
interchangeable
SF24CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 189386?
189386 is a TRANSFORMER,POWER.
What parts can replace 189386?
There are 23 known substitutes for 189386: 291, 293, 30039 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 189386?
189386 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-698-0432. 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