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51B2355ITEM1SUB1 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

51B2355ITEM1SUB1: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: ASBESTOS OVERALL, overall_width: 5.531 INCHES NOMINAL IN, aperture_width: 4.531 INCHES NOMINAL IN, overall_length: 8.750 INCHES NOMINAL IN, aperture_length: 7.750 INCHES NOMINAL IN, outside_corner_radius: 0.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-298-5404, 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
51B2355ITEM1SUB1
NSN: 5330-00-298-5404
FSC: 5330 — Packing and Gasket Materials
CAGE: 79500 — WESTINGHOUSE ELECTRIC CORP (USA)
SPECIFICATIONS
materialASBESTOS OVERALL
overall_width5.531 INCHES NOMINAL IN
aperture_width4.531 INCHES NOMINAL IN
overall_length8.750 INCHES NOMINAL IN
aperture_length7.750 INCHES NOMINAL IN
outside_corner_radius0.500 INCHES NOMINAL IN
cross-sectional_thickness0.062 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN5330-00-298-5404
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 51B2355ITEM1SUB1 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
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
APERTURE WIDTH: 4.531 INCHES NOMINAL IN
•
APERTURE LENGTH: 7.750 INCHES NOMINAL IN
•
OUTSIDE CORNER RADIUS: 0.500 INCHES NOMINAL IN
•
MATERIAL: ASBESTOS OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.062 INCHES NOMINAL IN
OVERALL LENGTH8.750 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL WIDTH5.531 INCHES NOMINAL IN
APERTURE WIDTH4.531 INCHES NOMINAL IN
APERTURE LENGTH7.750 INCHES NOMINAL IN
OUTSIDE CORNER RADIUS0.500 INCHES NOMINAL IN
MATERIALASBESTOS 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

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 51B2355ITEM1SUB1?
51B2355ITEM1SUB1 is a GASKET.
What is the NSN for 51B2355ITEM1SUB1?
51B2355ITEM1SUB1 is cataloged in the U.S. Government catalog under NSN 5330-00-298-5404. 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.