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F400K391 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

F400K391: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: PAPER AND GLUE OVERALL, overall_width: 7.500 INCHES NOMINAL IN, overall_length: 7.875 INCHES NOMINAL IN, cross-sectional_thickness: 0.031 INCHES NOMINAL IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-025-6638, 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
F400K391
NSN: 5330-00-025-6638
FSC: 5330 — Packing and Gasket Materials
CAGE: 63728 — SEALCRAFT CORPORATION (USA)
SPECIFICATIONS
materialPAPER AND GLUE OVERALL
overall_width7.500 INCHES NOMINAL IN
overall_length7.875 INCHES NOMINAL IN
cross-sectional_thickness0.031 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN5330-00-025-6638
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: F400K391 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
•
CROSS-SECTIONAL THICKNESS: 0.031 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
MATERIAL: PAPER AND GLUE OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.031 INCHES NOMINAL IN
OVERALL LENGTH7.875 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL WIDTH7.500 INCHES NOMINAL IN
MATERIALPAPER AND GLUE OVERALL
SUBSTITUTES & CROSS-REFERENCES 3
41320Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
07-865184Reference document
Same NSN cross-reference
Reference document — Secondary reference
865184Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is F400K391?
F400K391 is a GASKET.
What parts can replace F400K391?
There are 3 known substitutes for F400K391: 41320, 07-865184, 865184. Substitute compatibility should be verified for your specific system.
What is the NSN for F400K391?
F400K391 is cataloged in the U.S. Government catalog under NSN 5330-00-025-6638. This indicates validated use in U.S. government and defense supply chains.
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