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BA3140 ✓ 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 FLUOROSILICONE CLASS FQ OVERALL, hole_diameter: 0.200 INCHES MINIMUM AND 0.208 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: 4.307 INCHES MINIMUM AND 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 5330-00-998-3230, 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
BA3140
NSN: 5330-00-998-3230
FSC: 5330
CAGE: 95272 — STILLMAN SEAL CORPORATION DIV STILLMAN SEAL CORPERATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 AND RUBBER FLUOROSILICONE CLASS FQ OVERALL
hole_diameter0.200 INCHES MINIMUM AND 0.208 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
aperture_diameter3.400 INCHES NOMINAL IN
surface_treatmentANODIZE OVERALL
bolt_hole_quantity8
gage_ring_thickness0.080 INCHES NOMINAL IN
bolt_circle_diameter4.307 INCHES MINIMUM AND 4.317 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
material_document_and_classificationQQ-A-225/8 FED SPEC 1ST MATERIAL RESPONSE AND MIL-R-25988 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
NSN5330-00-998-3230
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BA3140 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
BOLT HOLE QUANTITY: 8
•
SURFACE TREATMENT: ANODIZE OVERALL
•
APERTURE DIAMETER: 3.400 INCHES NOMINAL IN
•
OUTSIDE CORNER RADIUS: 0.420 INCHES NOMINAL IN
•
CROSS-SECTIONAL THICKNESS: 0.120 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.200 INCHES MINIMUM AND 0.208 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
•
BOLT CIRCLE DIAMETER: 4.307 INCHES MINIMUM AND 4.317 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
BOLT HOLE QUANTITY8
SURFACE TREATMENTANODIZE OVERALL
APERTURE DIAMETER3.400 INCHES NOMINAL IN
OUTSIDE CORNER RADIUS0.420 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.120 INCHES NOMINAL IN
HOLE DIAMETER0.200 INCHES MINIMUM AND 0.208 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
BOLT CIRCLE DIAMETER4.307 INCHES MINIMUM AND 4.317 INCHES MAXIMUM IN
GAGE RING THICKNESS0.080 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY 6061 AND RUBBER FLUOROSILICONE CLASS FQ OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
80552Interchangeable
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648195Interchangeable
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805524Interchangeable
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40121Interchangeable
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717-014864Interchangeable
interchangeable cross-reference
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LD25031Interchangeable
interchangeable cross-reference
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LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BA3140?
BA3140 is a GASKET.
What parts can replace BA3140?
There are 16 known substitutes for BA3140: 80552, 648195, 805524 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BA3140?
BA3140 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-998-3230. 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