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204-040-340-003 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

204-040-340-003: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: ASBESTOS AND RUBBER NATURAL OR RUBBER SYNTHETIC OVERALL, end_radius: 0.380 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN, overall_width: 1.060 INCHES NOMINAL IN, overall_length: 3.440 INCHES NOMINAL IN, cross-sectional_thickness: 0.032 INCHES NOMINAL IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-758-3687, 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
204-040-340-003
NSN: 5330-00-758-3687
FSC: 5330 — Packing and Gasket Materials
CAGE: 97499 — BELL TEXTRON INC (USA)
SPECIFICATIONS
materialASBESTOS AND RUBBER NATURAL OR RUBBER SYNTHETIC OVERALL
end_radius0.380 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
overall_width1.060 INCHES NOMINAL IN
overall_length3.440 INCHES NOMINAL IN
cross-sectional_thickness0.032 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-A-7021,CL 1 MIL SPEC ALL MATERIAL RESPONSES OVERALL
bolt_hole_centerline_to_nearest_edge_distance0.380 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
outside_edge_to_bolt_hole_center_distance_along_length0.380 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
center_to_center_distance_between_bolt_holes_along_length1.280 INCHES MINIMUM AND 1.340 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
NSN5330-00-758-3687
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 204-040-340-003 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
•
CROSS-SECTIONAL THICKNESS: 0.032 INCHES NOMINAL IN
•
END RADIUS: 0.380 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-A-7021,CL 1 MIL SPEC ALL MATERIAL RESPONSES OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
BOLT HOLE CENTERLINE TO NEAREST EDGE DISTANCE: 0.380 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH: 1.280 INCHES MINIMUM AND 1.340 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.032 INCHES NOMINAL IN
END RADIUS0.380 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-A-7021,CL 1 MIL SPEC ALL MATERIAL RESPONSES OVERALL
OVERALL LENGTH3.440 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL WIDTH1.060 INCHES NOMINAL IN
BOLT HOLE CENTERLINE TO NEAREST EDGE DISTANCE0.380 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH1.280 INCHES MINIMUM AND 1.340 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH0.380 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
MATERIALASBESTOS AND RUBBER NATURAL OR RUBBER SYNTHETIC OVERALL
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 1
204-040-340-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 204-040-340-003?
204-040-340-003 is a GASKET.
What parts can replace 204-040-340-003?
There is 1 known substitute for 204-040-340-003: 204-040-340-3. Substitute compatibility should be verified for your specific system.
What is the NSN for 204-040-340-003?
204-040-340-003 is cataloged in the U.S. Government catalog under NSN 5330-00-758-3687. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.