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6520-90-308-7041 — SEAL,NONMETALLIC SPECIAL SHAPED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6520-90-308-7041: SEAL,NONMETALLIC SPECIAL SHAPED.

SEAL,NONMETALLIC SPECIAL SHAPED. Key specifications include construction: SOLID, aperture_width: 21.150 INCHES NOMINAL IN, aperture_length: 39.070 INCHES NOMINAL IN, fabrication_method: SOLID, cross-sectional_width: 1.310 INCHES NOMINAL IN, cross-sectional_height: 0.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-413-4034, 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
6520-90-308-7041
NSN: 5330-00-413-4034
FSC: 5330 — Packing and Gasket Materials
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
constructionSOLID
aperture_width21.150 INCHES NOMINAL IN
aperture_length39.070 INCHES NOMINAL IN
fabrication_methodSOLID
cross-sectional_width1.310 INCHES NOMINAL IN
cross-sectional_height0.500 INCHES NOMINAL IN
cross-sectional_thickness0.063 INCHES NOMINAL IN
cross-sectional_shape_styleHOLLOW BULB
cross_section_inside_diameter0.374 INCHES NOMINAL IN
NSN5330-00-413-4034
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6520-90-308-7041 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: 0.063 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.500 INCHES NOMINAL IN
•
CROSS-SECTIONAL WIDTH: 1.310 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: HOLLOW BULB
•
APERTURE WIDTH: 21.150 INCHES NOMINAL IN
•
CROSS SECTION INSIDE DIAMETER: 0.374 INCHES NOMINAL IN
•
APERTURE LENGTH: 39.070 INCHES NOMINAL IN
•
FABRICATION METHOD: SOLID
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.063 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.500 INCHES NOMINAL IN
CROSS-SECTIONAL WIDTH1.310 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEHOLLOW BULB
APERTURE WIDTH21.150 INCHES NOMINAL IN
CROSS SECTION INSIDE DIAMETER0.374 INCHES NOMINAL IN
APERTURE LENGTH39.070 INCHES NOMINAL IN
FABRICATION METHODSOLID
CONSTRUCTIONSOLID
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
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6520-90-308-7041?
6520-90-308-7041 is a SEAL,NONMETALLIC SPECIAL SHAPED.
What is the NSN for 6520-90-308-7041?
6520-90-308-7041 is cataloged in the U.S. Government catalog under NSN 5330-00-413-4034. 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.