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J4250 1-2PC26 — CUP,COMPRESSION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

J4250 1-2PC26: CUP,COMPRESSION.

The CUP,COMPRESSION is a the manufacturer industrial component. Key specifications include material: LEATHER OVERALL, overall_length: 0.500 INCHES NOMINAL IN, feather_edge_angle: 45.0 DEGREES NOMINAL, center_hole_diameter: 0.563 INCHES NOMINAL IN, recess_inside_diameter: 1.000 INCHES NOMINAL IN, base_material_thickness: 0.094 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-251-0483, 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
J4250 1-2PC26
NSN: 5340-00-251-0483
FSC: 5340 — Hardware, Commercial
CAGE: 16859 — CRANE CO DBA CRANE-DEMING PUMPS DIVISION DIV DEMING PUMPS (USA)
SPECIFICATIONS
materialLEATHER OVERALL
overall_length0.500 INCHES NOMINAL IN
feather_edge_angle45.0 DEGREES NOMINAL
center_hole_diameter0.563 INCHES NOMINAL IN
recess_inside_diameter1.000 INCHES NOMINAL IN
base_material_thickness0.094 INCHES NOMINAL IN
NSN5340-00-251-0483
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: J4250 1-2PC26 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
•
CENTER HOLE DIAMETER: 0.563 INCHES NOMINAL IN
•
BASE MATERIAL THICKNESS: 0.094 INCHES NOMINAL IN
•
MATERIAL: LEATHER OVERALL
•
RECESS INSIDE DIAMETER: 1.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FEATHER EDGE ANGLE45.0 DEGREES NOMINAL
OVERALL LENGTH0.500 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.563 INCHES NOMINAL IN
BASE MATERIAL THICKNESS0.094 INCHES NOMINAL IN
MATERIALLEATHER OVERALL
RECESS INSIDE DIAMETER1.000 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
12438Reference document
Same NSN cross-reference
Reference document — Secondary reference
12438TReference document
Same NSN cross-reference
Reference document — Secondary reference
J4268 1-2PC26Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is J4250 1-2PC26?
J4250 1-2PC26 is a CUP,COMPRESSION.
What parts can replace J4250 1-2PC26?
There are 3 known substitutes for J4250 1-2PC26: 12438, 12438T, J4268 1-2PC26. Substitute compatibility should be verified for your specific system.
What is the NSN for J4250 1-2PC26?
J4250 1-2PC26 is cataloged in the U.S. Government catalog under NSN 5340-00-251-0483. 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.