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PartsTable / COMPONENT / MIL-G-12803C I/N F326128M6
MIL-G-12803C I/N F326128M6 ✓ 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-G-12803C I/N F326128M6 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 5330-00-365-7671, 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-G-12803C I/N F326128M6
NSN: 5330-00-365-7671
FSC: 5330
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberMIL-G-12803C I/N F326128M6
NSN5330-00-365-7671
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL-G-12803C I/N F326128M6 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
•
APERTURE DIAMETER: 16.000 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.562 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-12803,NO. +3313B MIL SPEC ALL MATERIAL RESPONSES OVERALL
•
OUTSIDE DIAMETER: 19.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
CROSS-SECTIONAL THICKNESS: 0.062 INCHES NOMINAL IN
•
MATERIAL: PAPER AND GLUE OVERALL
•
BOLT CIRCLE DIAMETER: 17.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
APERTURE DIAMETER16.000 INCHES NOMINAL IN
HOLE DIAMETER0.562 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-12803,NO. +3313B MIL SPEC ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER19.000 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
CROSS-SECTIONAL THICKNESS0.062 INCHES NOMINAL IN
MATERIALPAPER AND GLUE OVERALL
BOLT CIRCLE DIAMETER17.500 INCHES NOMINAL IN
BOLT HOLE QUANTITY15
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
181880PC4Interchangeable
interchangeable cross-reference
interchangeable
00737 SH 47 ST 164Interchangeable
interchangeable cross-reference
interchangeable
22890-8Interchangeable
interchangeable cross-reference
interchangeable
81125S41-38853ALT1PC14Interchangeable
interchangeable cross-reference
interchangeable
HH-P-96GInterchangeable
interchangeable cross-reference
interchangeable
274372PC6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-G-12803C I/N F326128M6?
MIL-G-12803C I/N F326128M6 is a MIL-G-12803C I/N F326128M6.
What parts can replace MIL-G-12803C I/N F326128M6?
There are 17 known substitutes for MIL-G-12803C I/N F326128M6: 181880PC4, 00737 SH 47 ST 164, 22890-8 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-G-12803C I/N F326128M6?
MIL-G-12803C I/N F326128M6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-365-7671. 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