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BA3139 ✓ 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 RETAINER, hole_diameter: 0.323 INCHES MINIMUM AND 0.331 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN, aperture_diameter: 3.400 INCHES NOMINAL IN, surface_treatment: ANODIZE OVERALL, gage_ring_thickness: 0.080 INCHES NOMINAL IN, bolt_circle_diameter: 4.317 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-998-3232, 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
BA3139
NSN: 5330-00-998-3232
FSC: 5330
CAGE: SW461 — HUTCHINSON SEAL DE MEXICO STILLMAN SEAL DIVISION DIV STILLMAN SEAL,JPR,ESPA (MEX)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 RETAINER
hole_diameter0.323 INCHES MINIMUM AND 0.331 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
aperture_diameter3.400 INCHES NOMINAL IN
surface_treatmentANODIZE OVERALL
bolt_hole_quantity6
gage_ring_thickness0.080 INCHES NOMINAL IN
bolt_circle_diameter4.317 INCHES MAXIMUM IN
elongation_percentage125 MAXIMUM
outside_corner_radius0.420 INCHES NOMINAL IN
cross-sectional_thickness0.120 INCHES NOMINAL IN
cross-sectional_shape_styleMETAL AND SYNTHETIC RUBBER
outside_corner_inverted_radius2.000 INCHES NOMINAL IN
NSN5330-00-998-3232
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BA3139 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/11 FED SPEC 1ST MATERIAL RESPONSE OR AMS 4023 6061 T6 ASSN STD 2ND MATERIAL RESPONSE RETAINER
•
HOLE DIAMETER: 0.323 INCHES MINIMUM AND 0.331 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
•
OUTSIDE CORNER INVERTED RADIUS: 2.000 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541 CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
OUTSIDE CORNER RADIUS: 0.420 INCHES NOMINAL IN
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
SIDE RADIUS FROM GASKET CENTER: 2.120 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/11 FED SPEC 1ST MATERIAL RESPONSE OR AMS 4023 6061 T6 ASSN STD 2ND MATERIAL RESPONSE RETAINER
HOLE DIAMETER0.323 INCHES MINIMUM AND 0.331 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
OUTSIDE CORNER INVERTED RADIUS2.000 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541 CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-25988 MIL SPEC SINGLE MATERIAL RESPONSE PACKING
OUTSIDE CORNER RADIUS0.420 INCHES NOMINAL IN
ELONGATION PERCENTAGE125 MAXIMUM
SIDE RADIUS FROM GASKET CENTER2.120 INCHES NOMINAL IN
MATERIALRUBBER PACKING
APERTURE DIAMETER3.400 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
TAPMAGIC FLUIDInterchangeable
interchangeable cross-reference
interchangeable
TRIZOL TFInterchangeable
interchangeable cross-reference
interchangeable
RAPID TAPInterchangeable
interchangeable cross-reference
interchangeable
442006Interchangeable
interchangeable cross-reference
interchangeable
03420006ZInterchangeable
interchangeable cross-reference
interchangeable
40120Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BA3139?
BA3139 is a GASKET.
What parts can replace BA3139?
There are 23 known substitutes for BA3139: TAPMAGIC FLUID, TRIZOL TF, RAPID TAP and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BA3139?
BA3139 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-998-3232. 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