PartsTable
Technical Data Sheet

999/4/35300/004 — PLUG,PROTECTIVE,DUST AND MOISTUR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

999/4/35300/004: PLUG,PROTECTIVE,DUST AND MOISTUR.

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: PLASTIC POLYAMIDE NYLON, design_type: FRICTION, overall_diameter: 2.141 INCHES NOMINAL IN, opening_inside_diameter_for_which_designed: 2.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-259-7144, 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
999/4/35300/004
NSN: 5340-01-259-7144
FSC: 5340 — Hardware, Commercial
CAGE: U3906 — GEC MARCONI SECURE SYSTEMS (GBR)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON
design_typeFRICTION
overall_diameter2.141 INCHES NOMINAL IN
opening_inside_diameter_for_which_designed2.000 INCHES NOMINAL IN
NSN5340-01-259-7144
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 999/4/35300/004 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
KEY FEATURES
•
DESIGN TYPE: FRICTION
•
OVERALL DIAMETER: 2.141 INCHES NOMINAL IN
•
OPENING INSIDE DIAMETER FOR WHICH DESIGNED: 2.000 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYAMIDE NYLON
TECHNICAL CHARACTERISTICS
DESIGN TYPEFRICTION
OVERALL DIAMETER2.141 INCHES NOMINAL IN
OPENING INSIDE DIAMETER FOR WHICH DESIGNED2.000 INCHES NOMINAL IN
MATERIALPLASTIC POLYAMIDE NYLON
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
DP2000 BLACKSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 999/4/35300/004?
999/4/35300/004 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace 999/4/35300/004?
There is 1 known substitute for 999/4/35300/004: DP2000 BLACK. Substitute compatibility should be verified for your specific system.
What is the NSN for 999/4/35300/004?
999/4/35300/004 is cataloged in the U.S. Government catalog under NSN 5340-01-259-7144. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.