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FC-400 — CAP,FILLER OPENING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

FC-400: CAP,FILLER OPENING.

The CAP,FILLER OPENING is a the manufacturer industrial component. Key specifications include material: PLASTIC VINYL, design_type: FRICTION, outside_diameter: 4.00 INCHES NOMINAL IN, overall_diameter: 4.808 INCHES NOMINAL IN, special_features: BAIL CAP,BEYONET STYLE, inside_diameter_length: 0.344 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-900-4764, 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
FC-400
NSN: 5340-00-900-4764
NIINs: 009004764, 016852615
FSC: 5340 — Hardware, Commercial
CAGE: 15819 — SINCLAIR & RUSH, INC. DBA SINCLAIR & RUSH INC (USA)
SPECIFICATIONS
materialPLASTIC VINYL
design_typeFRICTION
outside_diameter4.00 INCHES NOMINAL IN
overall_diameter4.808 INCHES NOMINAL IN
special_featuresBAIL CAP,BEYONET STYLE
inside_diameter_length0.344 INCHES NOMINAL IN
round_cap_outside_surface_conditionSMOOTH
part_name_assigned_by_controlling_agencyFUEL CAP
tube_outside_diameter_for_which_designed4.000 INCHES NOMINAL IN
NSN5340-00-900-4764
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: FC-400 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: 4.808 INCHES NOMINAL IN
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 4.000 INCHES NOMINAL IN
•
MATERIAL: PLASTIC VINYL
•
INSIDE DIAMETER LENGTH: 0.344 INCHES NOMINAL IN
•
ROUND CAP OUTSIDE SURFACE CONDITION: SMOOTH
TECHNICAL CHARACTERISTICS
DESIGN TYPEFRICTION
OVERALL DIAMETER4.808 INCHES NOMINAL IN
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED4.000 INCHES NOMINAL IN
MATERIALPLASTIC VINYL
INSIDE DIAMETER LENGTH0.344 INCHES NOMINAL IN
ROUND CAP OUTSIDE SURFACE CONDITIONSMOOTH
SUBSTITUTES & CROSS-REFERENCES 1
840520Same 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 FC-400?
FC-400 is a CAP,FILLER OPENING.
What parts can replace FC-400?
There is 1 known substitute for FC-400: 840520. Substitute compatibility should be verified for your specific system.
What is the NSN for FC-400?
FC-400 is cataloged in the U.S. Government catalog under NSN 5340-00-900-4764. 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.