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6619720 — SEAL,NONMETALLIC SPECIAL SHAPED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6619720: SEAL,NONMETALLIC SPECIAL SHAPED.

SEAL,NONMETALLIC SPECIAL SHAPED. Key specifications include material: RUBBER SILICONE CLASS Q OVERALL, construction: ONE-PIECEONE-PIECE, aperture_width: 38.170 INCHES NOMINAL38.170 INCHES NOMINAL IN, aperture_length: 46.540 INCHES NOMINAL46.540 INCHES NOMINAL IN, style_designator: NON-CIRCULAR, attachment_method: ROUND HOLEROUND HOLE. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-353-9563, 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
6619720
NSN: 5330-01-353-9563
FSC: 5330 — Packing and Gasket Materials
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialRUBBER SILICONE CLASS Q OVERALL
constructionONE-PIECEONE-PIECE
aperture_width38.170 INCHES NOMINAL38.170 INCHES NOMINAL IN
aperture_length46.540 INCHES NOMINAL46.540 INCHES NOMINAL IN
style_designatorNON-CIRCULAR
attachment_methodROUND HOLEROUND HOLE
cross-sectional_width1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN
cross-sectional_height0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
attachment_hole_diameter0.325 INCHES NOMINAL0.325 INCHES NOMINAL IN
cross-sectional_thickness0.115 INCHES NOMINAL0.115 INCHES NOMINAL IN
attachment_feature_quantity4040
cross-sectional_shape_styleHOLLOW BULBHOLLOW BULB
NSN5330-01-353-9563
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6619720 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
•
ATTACHMENT HOLE DIAMETER: 0.325 INCHES NOMINAL0.325 INCHES NOMINAL IN
•
ATTACHMENT FEATURE QUANTITY: 4040
•
CROSS-SECTIONAL THICKNESS: 0.115 INCHES NOMINAL0.115 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
•
CROSS-SECTIONAL WIDTH: 1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NON-CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: ZZ-R-765,CLASS 3B,GRADE 50 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: HOLLOW BULBHOLLOW BULB
TECHNICAL CHARACTERISTICS
ATTACHMENT HOLE DIAMETER0.325 INCHES NOMINAL0.325 INCHES NOMINAL IN
ATTACHMENT FEATURE QUANTITY4040
CROSS-SECTIONAL THICKNESS0.115 INCHES NOMINAL0.115 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
CROSS-SECTIONAL WIDTH1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN
STYLE DESIGNATORNON-CIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONZZ-R-765,CLASS 3B,GRADE 50 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLEHOLLOW BULBHOLLOW BULB
APERTURE WIDTH38.170 INCHES NOMINAL38.170 INCHES NOMINAL IN
CROSS SECTION INSIDE DIAMETER0.188 INCHES NOMINAL0.188 INCHES NOMINAL 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
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6619720?
6619720 is a SEAL,NONMETALLIC SPECIAL SHAPED.
What is the NSN for 6619720?
6619720 is cataloged in the U.S. Government catalog under NSN 5330-01-353-9563. 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.