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K-4009 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The CUP,COMPRESSION is a the manufacturer industrial component. Key specifications include material: LEATHER OVERALL, overall_length: 1.000 INCHES NOMINAL IN, overall_diameter: 5.001 INCHES NOMINAL IN, feather_edge_angle: 30.0 DEGREES NOMINAL, center_hole_diameter: 0.875 INCHES NOMINAL IN, recess_inside_diameter: 4.625 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-597-8022, 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
K-4009
NSN: 5340-00-597-8022
FSC: 5340
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialLEATHER OVERALL
overall_length1.000 INCHES NOMINAL IN
overall_diameter5.001 INCHES NOMINAL IN
feather_edge_angle30.0 DEGREES NOMINAL
center_hole_diameter0.875 INCHES NOMINAL IN
recess_inside_diameter4.625 INCHES NOMINAL IN
base_material_thickness0.188 INCHES NOMINAL IN
NSN5340-00-597-8022
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: K-4009 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
•
MATERIAL: LEATHER OVERALL
•
BASE MATERIAL THICKNESS: 0.188 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.875 INCHES NOMINAL IN
•
FEATHER EDGE ANGLE: 30.0 DEGREES NOMINAL
•
RECESS INSIDE DIAMETER: 4.625 INCHES NOMINAL IN
•
OVERALL DIAMETER: 5.001 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH1.000 INCHES NOMINAL IN
MATERIALLEATHER OVERALL
BASE MATERIAL THICKNESS0.188 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.875 INCHES NOMINAL IN
FEATHER EDGE ANGLE30.0 DEGREES NOMINAL
RECESS INSIDE DIAMETER4.625 INCHES NOMINAL IN
OVERALL DIAMETER5.001 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
4009Upgraded Successor
successor cross-reference
successor
204009Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is K-4009?
K-4009 is a CUP,COMPRESSION.
What parts can replace K-4009?
There are 2 known substitutes for K-4009: 4009, 204009. Substitute compatibility should be verified for your specific system.
What is the NSN for K-4009?
K-4009 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-597-8022. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026