PartsTable
Technical Data Sheet
Download PDF

4N999 — PLUG,PROTECTIVE,DUST AND MOISTUR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4N999: PLUG,PROTECTIVE,DUST AND MOISTUR.

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include special_features: SOLID RUBBER PLUG THAT IS A INTERFERENCE (FRICTION) FIT, end_item_identification: LOGISTICS SUPPORT VESSEL. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-053-4680, 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
4N999
NSN: 5340-01-053-4680
FSC: 5340 — Hardware, Commercial
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
special_featuresSOLID RUBBER PLUG THAT IS A INTERFERENCE (FRICTION) FIT
end_item_identificationLOGISTICS SUPPORT VESSEL
NSN5340-01-053-4680
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4N999 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESSOLID RUBBER PLUG THAT IS A INTERFERENCE (FRICTION) FIT
END ITEM IDENTIFICATIONLOGISTICS SUPPORT VESSEL
SUBSTITUTES & CROSS-REFERENCES 2
12KP817Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
4N0999Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 4N999?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 4N999?
4N999 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace 4N999?
There are 2 known substitutes for 4N999: 12KP817, 4N0999. Substitute compatibility should be verified for your specific system.
What is the NSN for 4N999?
4N999 is cataloged in the U.S. Government catalog under NSN 5340-01-053-4680. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 4N999