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1503543 — GASKET

✓ Government record, cited
3M · ORING SEAL
PRODUCT OVERVIEW

1503543: GASKET.

The GASKET is a 3M industrial component. Key specifications include material: CORK OVERALL, outside_diameter: 0.812 INCHES MINIMUM AND 0.874 INCHES MAXIMUM IN, style_designator: CIRCULAR, aperture_diameter: 0.515 INCHES NOMINAL IN, cross-sectional_thickness: 0.250 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-245-6196, 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
1503543
NSN: 5330-00-245-6196
FSC: 5330 — Packing and Gasket Materials
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
materialCORK OVERALL
outside_diameter0.812 INCHES MINIMUM AND 0.874 INCHES MAXIMUM IN
style_designatorCIRCULAR
aperture_diameter0.515 INCHES NOMINAL IN
cross-sectional_thickness0.250 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN5330-00-245-6196
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1503543 MFR: 3M ⚠ 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: 0.250 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: CIRCULAR
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
OUTSIDE DIAMETER: 0.812 INCHES MINIMUM AND 0.874 INCHES MAXIMUM IN
•
APERTURE DIAMETER: 0.515 INCHES NOMINAL IN
•
MATERIAL: CORK OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.250 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
STYLE DESIGNATORCIRCULAR
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE DIAMETER0.812 INCHES MINIMUM AND 0.874 INCHES MAXIMUM IN
APERTURE DIAMETER0.515 INCHES NOMINAL IN
MATERIALCORK OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
040889Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
853565Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1503543?
1503543 is a GASKET manufactured by 3M.
What parts can replace 1503543?
There are 2 known substitutes for 1503543: 040889, 853565. Substitute compatibility should be verified for your specific system.
What is the NSN for 1503543?
1503543 is cataloged in the U.S. Government catalog under NSN 5330-00-245-6196. 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.