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PartsTable / COMPONENT / MIL-P-24503 .687 X .438 X .188
MIL-P-24503 .687 X .438 X .188 ✓ 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 MIL-P-24503 .687 X .438 X .188 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-461-7823, 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
MIL-P-24503 .687 X .438 X .188
NSN: 5330-01-461-7823
FSC: 5330
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberMIL-P-24503 .687 X .438 X .188
NSN5330-01-461-7823
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL-P-24503 .687 X .438 X .188 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
•
PERIPHERAL DIAMETER: 0.687 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
•
MATERIAL: GRAPHITE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-P-24503 TYPE 2, CLASS 2, GRADE I MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL HEIGHT: 0.188 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.438 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL DIAMETER0.687 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
MATERIALGRAPHITE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-P-24503 TYPE 2, CLASS 2, GRADE I MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL HEIGHT0.188 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.438 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
MIL-P-24503Interchangeable
interchangeable cross-reference
interchangeable
MIL-P-24503 TY2,CL2,GRIInterchangeable
interchangeable cross-reference
interchangeable
MIL-P-24503 1.375 X .875 X .250Interchangeable
interchangeable cross-reference
interchangeable
2.375 OD X 1.625ID X .375THKInterchangeable
interchangeable cross-reference
interchangeable
MIL-P-24503 TY 2 CL 2 GRIInterchangeable
interchangeable cross-reference
interchangeable
3.375OD X 2.375 ID X .50 THKInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-P-24503 .687 X .438 X .188?
MIL-P-24503 .687 X .438 X .188 is a MIL-P-24503 .687 X .438 X .188.
What parts can replace MIL-P-24503 .687 X .438 X .188?
There are 6 known substitutes for MIL-P-24503 .687 X .438 X .188: MIL-P-24503, MIL-P-24503 TY2,CL2,GRI, MIL-P-24503 1.375 X .875 X .250 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-P-24503 .687 X .438 X .188?
MIL-P-24503 .687 X .438 X .188 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-461-7823. 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