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740355-25 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

740355-25: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include hole_diameter: 0.346 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 18.870 INCHES NOMINAL IN, aperture_width: 17.750 INCHES NOMINAL IN, overall_length: 38.690 INCHES NOMINAL IN, aperture_length: 37.570 INCHES NOMINAL IN, outside_corner_radius: 0.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-255-0106, 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
740355-25
NSN: 5330-00-255-0106
FSC: 5330 — Packing and Gasket Materials
CAGE: 35351 — GE AVIATION SYSTEMS LLC (USA)
SPECIFICATIONS
hole_diameter0.346 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width18.870 INCHES NOMINAL IN
aperture_width17.750 INCHES NOMINAL IN
overall_length38.690 INCHES NOMINAL IN
aperture_length37.570 INCHES NOMINAL IN
outside_corner_radius0.500 INCHES NOMINAL IN
cross-sectional_thickness0.062 INCHES NOMINAL IN
NSN5330-00-255-0106
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 740355-25 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: 0.062 INCHES NOMINAL IN
•
APERTURE WIDTH: 17.750 INCHES NOMINAL IN
•
APERTURE LENGTH: 37.570 INCHES NOMINAL IN
•
OUTSIDE CORNER RADIUS: 0.500 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.346 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.062 INCHES NOMINAL IN
OVERALL LENGTH38.690 INCHES NOMINAL IN
OVERALL WIDTH18.870 INCHES NOMINAL IN
APERTURE WIDTH17.750 INCHES NOMINAL IN
APERTURE LENGTH37.570 INCHES NOMINAL IN
OUTSIDE CORNER RADIUS0.500 INCHES NOMINAL IN
HOLE DIAMETER0.346 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 740355-25?
740355-25 is a GASKET.
What is the NSN for 740355-25?
740355-25 is cataloged in the U.S. Government catalog under NSN 5330-00-255-0106. 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.