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655539 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

655539: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR OVERALL, hole_diameter: 0.312 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 1.625 INCHES NOMINAL IN, overall_length: 2.250 INCHES NOMINAL IN, hardness_rating: 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL, style_designator: NON-CIRCULAR. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-260-0267, 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
655539
NSN: 5330-00-260-0267
FSC: 5330 — Packing and Gasket Materials
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR OVERALL
hole_diameter0.312 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width1.625 INCHES NOMINAL IN
overall_length2.250 INCHES NOMINAL IN
hardness_rating55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL
style_designatorNON-CIRCULAR
aperture_diameter0.750 INCHES NOMINAL IN
bolt_hole_quantity4
outside_corner_radius0.250 INCHES NOMINAL IN
cross-sectional_thickness0.020 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationASTM D2000 2BC620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-260-0267
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 655539 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: 0.020 INCHES NOMINAL IN
•
HARDNESS RATING: 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL
•
STYLE DESIGNATOR: NON-CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D2000 2BC620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
APERTURE DIAMETER: 0.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.020 INCHES NOMINAL IN
HARDNESS RATING55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL
STYLE DESIGNATORNON-CIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D2000 2BC620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH2.250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL WIDTH1.625 INCHES NOMINAL IN
APERTURE DIAMETER0.750 INCHES NOMINAL IN
BOLT HOLE QUANTITY4
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH1.625 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 655539?
655539 is a GASKET.
What is the NSN for 655539?
655539 is cataloged in the U.S. Government catalog under NSN 5330-00-260-0267. 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.