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CEC4781 ✓ 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 GASKET is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 AND RUBBER FLUOROCARBON CLASS FPM OVERALL, overall_width: 1.910 INCHES NOMINAL IN, overall_length: 5.970 INCHES NOMINAL IN, hardness_rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL, surface_treatment: ANODIZE OVERALL, bolt_hole_quantity: 16. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-015-9699, 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
CEC4781
NSN: 5330-01-015-9699
FSC: 5330
CAGE: 07060 — C. E. CONOVER & CO., INC. (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 AND RUBBER FLUOROCARBON CLASS FPM OVERALL
overall_width1.910 INCHES NOMINAL IN
overall_length5.970 INCHES NOMINAL IN
hardness_rating70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL
surface_treatmentANODIZE OVERALL
bolt_hole_quantity16
gage_ring_thickness0.125 INCHES NOMINAL IN
elongation_percentage125 MAXIMUM
maximum_pressure_rating42000.0 POUNDS PER SQUARE INCH (PSI) LBS
cross-sectional_thickness0.177 INCHES NOMINAL IN
material_document_and_classificationQQ-A-250/11 ALLOY 6061 TEMPER T6 FED SPEC 1ST MATERIAL RESPONSE AND MIL-R-83248 TY 1 CL 1 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-A-8625 TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5330-01-015-9699
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: CEC4781 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
•
HARDNESS RATING: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL
•
GAGE RING THICKNESS: 0.125 INCHES NOMINAL IN
•
MAXIMUM PRESSURE RATING: 42000.0 POUNDS PER SQUARE INCH (PSI) LBS
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/11 ALLOY 6061 TEMPER T6 FED SPEC 1ST MATERIAL RESPONSE AND MIL-R-83248 TY 1 CL 1 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL
GAGE RING THICKNESS0.125 INCHES NOMINAL IN
MAXIMUM PRESSURE RATING42000.0 POUNDS PER SQUARE INCH (PSI) LBS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/11 ALLOY 6061 TEMPER T6 FED SPEC 1ST MATERIAL RESPONSE AND MIL-R-83248 TY 1 CL 1 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
ELONGATION PERCENTAGE125 MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
OVERALL WIDTH1.910 INCHES NOMINAL IN
OVERALL LENGTH5.970 INCHES NOMINAL IN
BOLT HOLE QUANTITY16
CROSS-SECTIONAL THICKNESS0.177 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
1321-0202Interchangeable
interchangeable cross-reference
interchangeable
GGG-C-755Interchangeable
interchangeable cross-reference
interchangeable
717-003818Interchangeable
interchangeable cross-reference
interchangeable
40526Interchangeable
interchangeable cross-reference
interchangeable
1884-0054Interchangeable
interchangeable cross-reference
interchangeable
L2003M3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CEC4781?
CEC4781 is a GASKET.
What parts can replace CEC4781?
There are 14 known substitutes for CEC4781: 1321-0202, GGG-C-755, 717-003818 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CEC4781?
CEC4781 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-015-9699. 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