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5520719 — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5520719: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL, peripheral_diameter: 39.95 MILLIMETERS NOMINAL MM, center_hole_diameter: 28.6 MILLIMETERS NOMINAL MM, cross-sectional_height: 7.5 MILLIMETERS NOMINAL MM, cross-sectional_shape_style: SQUARE/RECTANGULAR, material_document_and_classification: ASTM D 2000 -3CH 720 A25B34E16E36F14 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-440-2293, 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
5520719
NSN: 5330-01-440-2293
FSC: 5330 — Packing and Gasket Materials
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
peripheral_diameter39.95 MILLIMETERS NOMINAL MM
center_hole_diameter28.6 MILLIMETERS NOMINAL MM
cross-sectional_height7.5 MILLIMETERS NOMINAL MM
cross-sectional_shape_styleSQUARE/RECTANGULAR
material_document_and_classificationASTM D 2000 -3CH 720 A25B34E16E36F14 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-440-2293
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5520719 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 HEIGHT: 7.5 MILLIMETERS NOMINAL MM
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D 2000 -3CH 720 A25B34E16E36F14 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
•
PERIPHERAL DIAMETER: 39.95 MILLIMETERS NOMINAL MM
•
CENTER HOLE DIAMETER: 28.6 MILLIMETERS NOMINAL MM
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT7.5 MILLIMETERS NOMINAL MM
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D 2000 -3CH 720 A25B34E16E36F14 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
PERIPHERAL DIAMETER39.95 MILLIMETERS NOMINAL MM
CENTER HOLE DIAMETER28.6 MILLIMETERS NOMINAL MM
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR 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
Shelf-life managedAcquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5520719?
5520719 is a PACKING,PREFORMED.
What is the NSN for 5520719?
5520719 is cataloged in the U.S. Government catalog under NSN 5330-01-440-2293. This indicates validated use in U.S. government and defense supply chains.
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