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D25203 — CUP,COMPRESSION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

D25203: CUP,COMPRESSION.

The CUP,COMPRESSION is a the manufacturer industrial component. Key specifications include material: LEATHER CATTLEHIDE OVERALL, overall_length: 0.375 INCHES NOMINAL IN, feather_edge_angle: 45.0 DEGREES NOMINAL, center_hole_diameter: 4.000 INCHES NOMINAL IN, recess_inside_diameter: 4.813 INCHES NOMINAL IN, base_material_thickness: 0.094 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-376-8896, 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
D25203
NSN: 5340-00-376-8896
FSC: 5340 — Hardware, Commercial
CAGE: 11859 — HUNT VALVE COMPANY, INC. (USA)
SPECIFICATIONS
materialLEATHER CATTLEHIDE OVERALL
overall_length0.375 INCHES NOMINAL IN
feather_edge_angle45.0 DEGREES NOMINAL
center_hole_diameter4.000 INCHES NOMINAL IN
recess_inside_diameter4.813 INCHES NOMINAL IN
base_material_thickness0.094 INCHES NOMINAL IN
material_document_and_classificationKK-L-181,GRADE A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5340-00-376-8896
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D25203 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
•
FEATHER EDGE ANGLE: 45.0 DEGREES NOMINAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: KK-L-181,GRADE A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CENTER HOLE DIAMETER: 4.000 INCHES NOMINAL IN
•
BASE MATERIAL THICKNESS: 0.094 INCHES NOMINAL IN
•
MATERIAL: LEATHER CATTLEHIDE OVERALL
•
RECESS INSIDE DIAMETER: 4.813 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FEATHER EDGE ANGLE45.0 DEGREES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONKK-L-181,GRADE A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH0.375 INCHES NOMINAL IN
CENTER HOLE DIAMETER4.000 INCHES NOMINAL IN
BASE MATERIAL THICKNESS0.094 INCHES NOMINAL IN
MATERIALLEATHER CATTLEHIDE OVERALL
RECESS INSIDE DIAMETER4.813 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
S4824H-3215025R EVAReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is D25203?
D25203 is a CUP,COMPRESSION.
What parts can replace D25203?
There is 1 known substitute for D25203: S4824H-3215025R EVA. Substitute compatibility should be verified for your specific system.
What is the NSN for D25203?
D25203 is cataloged in the U.S. Government catalog under NSN 5340-00-376-8896. 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.