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6390650-16 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6390650-16: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: STEEL, design_type: FRICTION, special_features: ENDCAP, INBOARD; AISI 1018, inside_diameter_length: 2.000 INCHES NOMINAL IN, end_item_identification: HOUSING, TRANSIT LATCH, tube_outside_diameter_for_which_designed: 3.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-512-6863, 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
6390650-16
NSN: 5340-01-512-6863
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL
design_typeFRICTION
special_featuresENDCAP, INBOARD; AISI 1018
inside_diameter_length2.000 INCHES NOMINAL IN
end_item_identificationHOUSING, TRANSIT LATCH
tube_outside_diameter_for_which_designed3.000 INCHES NOMINAL IN
opening_inside_diameter_for_which_designed1.658 INCHES MINIMUM AND 1.718 INCHES MAXIMUM IN
NSN5340-01-512-6863
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6390650-16 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
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 3.000 INCHES NOMINAL IN
•
OPENING INSIDE DIAMETER FOR WHICH DESIGNED: 1.658 INCHES MINIMUM AND 1.718 INCHES MAXIMUM IN
•
MATERIAL: STEEL
•
INSIDE DIAMETER LENGTH: 2.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
DESIGN TYPEFRICTION
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED3.000 INCHES NOMINAL IN
OPENING INSIDE DIAMETER FOR WHICH DESIGNED1.658 INCHES MINIMUM AND 1.718 INCHES MAXIMUM IN
SPECIAL FEATURESENDCAP, INBOARD; AISI 1018
END ITEM IDENTIFICATIONHOUSING, TRANSIT LATCH
MATERIALSTEEL
INSIDE DIAMETER LENGTH2.000 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
6390650 FIND 016Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6390650-16?
6390650-16 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace 6390650-16?
There is 1 known substitute for 6390650-16: 6390650 FIND 016. Substitute compatibility should be verified for your specific system.
What is the NSN for 6390650-16?
6390650-16 is cataloged in the U.S. Government catalog under NSN 5340-01-512-6863. 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.