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17030K — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

17030K: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include overall_diameter: 18.44 INCHES NOMINAL IN, inside_diameter_length: 5.125 INCHES NOMINAL IN, end_item_identification: 2320-01-560-4409, part_name_assigned_by_controlling_agency: CAP,PROTECTIVE,DUST. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-671-2790, 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
17030K
NSN: 5340-01-671-2790
FSC: 5340 — Hardware, Commercial
CAGE: 1BZD4 — TRU-HITCH, INC. (USA)
SPECIFICATIONS
overall_diameter18.44 INCHES NOMINAL IN
inside_diameter_length5.125 INCHES NOMINAL IN
end_item_identification2320-01-560-4409
part_name_assigned_by_controlling_agencyCAP,PROTECTIVE,DUST
NSN5340-01-671-2790
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 17030K 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
•
OVERALL DIAMETER: 18.44 INCHES NOMINAL IN
•
INSIDE DIAMETER LENGTH: 5.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER18.44 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYCAP,PROTECTIVE,DUST
END ITEM IDENTIFICATION2320-01-560-4409
INSIDE DIAMETER LENGTH5.125 INCHES NOMINAL IN
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
WC-D-34056-1KSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 17030K?
17030K is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace 17030K?
There is 1 known substitute for 17030K: WC-D-34056-1K. Substitute compatibility should be verified for your specific system.
What is the NSN for 17030K?
17030K is cataloged in the U.S. Government catalog under NSN 5340-01-671-2790. 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.