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Technical Data Sheet
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51839-1 — BOOT,DUST AND MOISTURE SEAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

51839-1: BOOT,DUST AND MOISTURE SEAL.

The BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-01-626-8379, 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
51839-1
NSN: 5340-01-626-8379
FSC: 5340 — Hardware, Commercial
CAGE: 12116 — NAMMO DEFENSE SYSTEMS INC. DBA NAMMO DEFENSE SYSTEMS INC (USA)
SPECIFICATIONS
Part Number51839-1
NSN5340-01-626-8379
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 51839-1 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 1
51839Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 51839-1?
51839-1 is a BOOT,DUST AND MOISTURE SEAL.
What parts can replace 51839-1?
There is 1 known substitute for 51839-1: 51839. Substitute compatibility should be verified for your specific system.
What is the NSN for 51839-1?
51839-1 is cataloged in the U.S. Government catalog under NSN 5340-01-626-8379. This indicates validated use in U.S. government and defense supply chains.
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