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5188043 — PLUG,PROTECTIVE,DUST AND MOISTUR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5188043: PLUG,PROTECTIVE,DUST AND MOISTUR.

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: STEEL, design_type: FRICTION, thread_class: 2A A, overall_diameter: 2.000 INCHES NOMINAL IN, features_provided: SHOULDER, surface_treatment: PASSIVATE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-187-5263, 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
5188043
NSN: 5340-01-187-5263
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL
design_typeFRICTION
thread_class2A A
overall_diameter2.000 INCHES NOMINAL IN
features_providedSHOULDER
surface_treatmentPASSIVATE
thread_size_and_series/type_designator1.625-18 UNEF
tube_outside_diameter_for_which_designed2.000 INCHES NOMINAL IN
opening_inside_diameter_for_which_designed1.433 INCHES MINIMUM AND 1.439 INCHES MAXIMUM IN
connector_nominal_thread_size_for_which_designed1.625 INCHES IN
NSN5340-01-187-5263
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5188043 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: 2.000 INCHES NOMINAL IN
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 2.000 INCHES NOMINAL IN
•
CONNECTOR NOMINAL THREAD SIZE FOR WHICH DESIGNED: 1.625 INCHES IN
•
FEATURES PROVIDED: SHOULDER
•
OPENING INSIDE DIAMETER FOR WHICH DESIGNED: 1.433 INCHES MINIMUM AND 1.439 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS
DESIGN TYPEFRICTION
OVERALL DIAMETER2.000 INCHES NOMINAL IN
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED2.000 INCHES NOMINAL IN
CONNECTOR NOMINAL THREAD SIZE FOR WHICH DESIGNED1.625 INCHES IN
FEATURES PROVIDEDSHOULDER
OPENING INSIDE DIAMETER FOR WHICH DESIGNED1.433 INCHES MINIMUM AND 1.439 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE
THREAD CLASS2A A
MATERIALSTEEL
THREAD SIZE AND SERIES/TYPE DESIGNATOR1.625-18 UNEF
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

No substitute or cross-reference records for this part.

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 5188043?
5188043 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What is the NSN for 5188043?
5188043 is cataloged in the U.S. Government catalog under NSN 5340-01-187-5263. 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.