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5550384-2 — PLUG,PROTECTIVE,DUST AND MOISTUR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5550384-2: PLUG,PROTECTIVE,DUST AND MOISTUR.

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: PLASTIC ACETAL, design_type: THREADED, thread_class: 2A A, special_features: INCL ONE O RING MS28775-027 AND ONE O RING MS28775-030, features_provided: GASKET AND SHOULDER, material_document_and_classification: E.I. DUPONT DE NEMOURS AND CO INC, DELRIN MFR REF SINGLE MATERIAL RESPONSE.

This part is cataloged in the U.S. Government catalog under NSN 5340-01-316-2702, 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
5550384-2
NSN: 5340-01-316-2702
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC ACETAL
design_typeTHREADED
thread_class2A A
special_featuresINCL ONE O RING MS28775-027 AND ONE O RING MS28775-030
features_providedGASKET AND SHOULDER
material_document_and_classificationE.I. DUPONT DE NEMOURS AND CO INC, DELRIN MFR REF SINGLE MATERIAL RESPONSE
thread_size_and_series/type_designator1.750-12 UN
NSN5340-01-316-2702
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5550384-2 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: THREADED
•
MATERIAL DOCUMENT AND CLASSIFICATION: E.I. DUPONT DE NEMOURS AND CO INC, DELRIN MFR REF SINGLE MATERIAL RESPONSE
•
FEATURES PROVIDED: GASKET AND SHOULDER
•
THREAD CLASS: 2A A
•
MATERIAL: PLASTIC ACETAL
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 1.750-12 UN
TECHNICAL CHARACTERISTICS
DESIGN TYPETHREADED
MATERIAL DOCUMENT AND CLASSIFICATIONE.I. DUPONT DE NEMOURS AND CO INC, DELRIN MFR REF SINGLE MATERIAL RESPONSE
FEATURES PROVIDEDGASKET AND SHOULDER
SPECIAL FEATURESINCL ONE O RING MS28775-027 AND ONE O RING MS28775-030
THREAD CLASS2A A
MATERIALPLASTIC ACETAL
THREAD SIZE AND SERIES/TYPE DESIGNATOR1.750-12 UN
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
5550384 ITEM 2Same 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
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FREQUENTLY ASKED QUESTIONS
What is 5550384-2?
5550384-2 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace 5550384-2?
There is 1 known substitute for 5550384-2: 5550384 ITEM 2. Substitute compatibility should be verified for your specific system.
What is the NSN for 5550384-2?
5550384-2 is cataloged in the U.S. Government catalog under NSN 5340-01-316-2702. 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.