PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 74431B
74431B ✓ 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: CORK OVERALL, aperture_width: 6.688 INCHES NOMINAL IN, aperture_length: 17.250 INCHES NOMINAL IN, style_designator: OVAL, bearing_surface_width: 0.125 INCHES NOMINAL IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-149-1850, 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
74431B
NSN: 5330-00-149-1850
FSC: 5330
CAGE: 64104 — DRESSER, LLC (USA)
SPECIFICATIONS
materialCORK OVERALL
aperture_width6.688 INCHES NOMINAL IN
aperture_length17.250 INCHES NOMINAL IN
style_designatorOVAL
bearing_surface_width0.125 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN5330-00-149-1850
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 74431B 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 LENGTH: 17.250 INCHES NOMINAL IN
•
APERTURE WIDTH: 6.688 INCHES NOMINAL IN
•
MATERIAL: CORK OVERALL
•
STYLE DESIGNATOR: OVAL
•
BEARING SURFACE WIDTH: 0.125 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
TECHNICAL CHARACTERISTICS (FLIS)
APERTURE LENGTH17.250 INCHES NOMINAL IN
APERTURE WIDTH6.688 INCHES NOMINAL IN
MATERIALCORK OVERALL
STYLE DESIGNATOROVAL
BEARING SURFACE WIDTH0.125 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
944.48.83.065Interchangeable
interchangeable cross-reference
interchangeable
1JA2721H03Interchangeable
interchangeable cross-reference
interchangeable
2144116-1Interchangeable
interchangeable cross-reference
interchangeable
310511Interchangeable
interchangeable cross-reference
interchangeable
6795808Interchangeable
interchangeable cross-reference
interchangeable
105AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 74431B?
74431B is a GASKET.
What parts can replace 74431B?
There are 17 known substitutes for 74431B: 944.48.83.065, 1JA2721H03, 2144116-1 and 14 more. Substitute compatibility should be verified for your specific system.
Is 74431B still available?
74431B is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026