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Technical Data Sheet
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T8393 — PLUG,EXPANSION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

T8393: PLUG,EXPANSION.

The PLUG,EXPANSION is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-00-354-0898, 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
T8393
NSN: 5340-00-354-0898
FSC: 5340 — Hardware, Commercial
CAGE: 73782 — TOWMOTOR CORP DALLAS PLANT SUB OF CATERPILLAR TRACTOR CO (USA)
SPECIFICATIONS
Part NumberT8393
NSN5340-00-354-0898
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: T8393 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
SUBSTITUTES & CROSS-REFERENCES 3
7HA6266AReference document
Same NSN cross-reference
Reference document — Secondary reference
7HA6Z66AReference document
Same NSN cross-reference
Reference document — Design control — primary reference
30805Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is T8393?
T8393 is a PLUG,EXPANSION.
What parts can replace T8393?
There are 3 known substitutes for T8393: 7HA6266A, 7HA6Z66A, 30805. Substitute compatibility should be verified for your specific system.
What is the NSN for T8393?
T8393 is cataloged in the U.S. Government catalog under NSN 5340-00-354-0898. This indicates validated use in U.S. government and defense supply chains.
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