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Technical Data Sheet
PartsTable / COMPONENT / T4-205
T4-205 ✓ 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: COTTON OVERALL, hole_diameter: 0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 4.188 INCHES NOMINAL IN, style_designator: NON-CIRCULAR, aperture_diameter: 2.766 INCHES NOMINAL IN, bolt_circle_diameter: 3.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-426-8376, 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
T4-205
NSN: 5330-00-426-8376
FSC: 5330
CAGE: 96147 — SOUTHERN COACHES, INC (USA)
SPECIFICATIONS
materialCOTTON OVERALL
hole_diameter0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width4.188 INCHES NOMINAL IN
style_designatorNON-CIRCULAR
aperture_diameter2.766 INCHES NOMINAL IN
bolt_hole_quantity4
bolt_circle_diameter3.500 INCHES NOMINAL IN
outside_corner_radius0.344 INCHES NOMINAL IN
cross-sectional_thickness0.047 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
side_radius_from_gasket_center1.656 INCHES NOMINAL IN
NSN5330-00-426-8376
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: T4-205 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: 2.766 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
BOLT HOLE QUANTITY: 4
•
SIDE RADIUS FROM GASKET CENTER: 1.656 INCHES NOMINAL IN
•
MATERIAL: COTTON OVERALL
•
BOLT CIRCLE DIAMETER: 3.500 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
TECHNICAL CHARACTERISTICS (FLIS)
APERTURE DIAMETER2.766 INCHES NOMINAL IN
HOLE DIAMETER0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
BOLT HOLE QUANTITY4
SIDE RADIUS FROM GASKET CENTER1.656 INCHES NOMINAL IN
OVERALL WIDTH4.188 INCHES NOMINAL IN
MATERIALCOTTON OVERALL
BOLT CIRCLE DIAMETER3.500 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
STYLE DESIGNATORNON-CIRCULAR
CROSS-SECTIONAL THICKNESS0.047 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
INSTABOND PRIMERInterchangeable
interchangeable cross-reference
interchangeable
22477Interchangeable
interchangeable cross-reference
interchangeable
8030PL1456294Interchangeable
interchangeable cross-reference
interchangeable
230209FInterchangeable
interchangeable cross-reference
interchangeable
230109Interchangeable
interchangeable cross-reference
interchangeable
PA5538Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is T4-205?
T4-205 is a GASKET.
What parts can replace T4-205?
There are 20 known substitutes for T4-205: INSTABOND PRIMER, 22477, 8030PL1456294 and 17 more. Substitute compatibility should be verified for your specific system.
Is T4-205 still available?
T4-205 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