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04-20784 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

04-20784: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER EPICHLOROHYDRIN HOMOPOLYMER CLASS CO OVERALL, outside_diameter: 65.5 MILLIMETERS NOMINAL MM, style_designator: CIRCULAR, aperture_diameter: 40.5 MILLIMETERS NOMINAL MM, bolt_circle_diameter: 54.0 MILLIMETERS NOMINAL MM, end_item_identification: 6115-01-561-7329 GENERATOR SET, DIESEL ENGINE. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-588-8942, 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
04-20784
NSN: 5330-01-588-8942
FSC: 5330 — Packing and Gasket Materials
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
materialRUBBER EPICHLOROHYDRIN HOMOPOLYMER CLASS CO OVERALL
outside_diameter65.5 MILLIMETERS NOMINAL MM
style_designatorCIRCULAR
aperture_diameter40.5 MILLIMETERS NOMINAL MM
bolt_circle_diameter54.0 MILLIMETERS NOMINAL MM
end_item_identification6115-01-561-7329 GENERATOR SET, DIESEL ENGINE
cross-sectional_thickness2.3 MILLIMETERS MINIMUM AND 2.4 MILLIMETERS MAXIMUM MM
largest_bolt_hole_diameter5.7 MILLIMETERS MINIMUM AND 6.3 MILLIMETERS MAXIMUM MM
largest_bolt_hole_quantity5
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
smallest_bolt_hole_diameter2.4 MILLIMETERS NOMINAL MM
smallest_bolt_hole_quantity1
NSN5330-01-588-8942
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 04-20784 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
•
SMALLEST BOLT HOLE QUANTITY: 1
•
CROSS-SECTIONAL THICKNESS: 2.3 MILLIMETERS MINIMUM AND 2.4 MILLIMETERS MAXIMUM MM
•
LARGEST BOLT HOLE QUANTITY: 5
•
STYLE DESIGNATOR: CIRCULAR
•
SMALLEST BOLT HOLE DIAMETER: 2.4 MILLIMETERS NOMINAL MM
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
OUTSIDE DIAMETER: 65.5 MILLIMETERS NOMINAL MM
•
APERTURE DIAMETER: 40.5 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
SMALLEST BOLT HOLE QUANTITY1
CROSS-SECTIONAL THICKNESS2.3 MILLIMETERS MINIMUM AND 2.4 MILLIMETERS MAXIMUM MM
LARGEST BOLT HOLE QUANTITY5
STYLE DESIGNATORCIRCULAR
SMALLEST BOLT HOLE DIAMETER2.4 MILLIMETERS NOMINAL MM
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE DIAMETER65.5 MILLIMETERS NOMINAL MM
APERTURE DIAMETER40.5 MILLIMETERS NOMINAL MM
BOLT CIRCLE DIAMETER54.0 MILLIMETERS NOMINAL MM
LARGEST BOLT HOLE DIAMETER5.7 MILLIMETERS MINIMUM AND 6.3 MILLIMETERS MAXIMUM MM
SUBSTITUTES & CROSS-REFERENCES 2
P-1403.1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
P-1403.6Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 04-20784?
04-20784 is a GASKET.
What parts can replace 04-20784?
There are 2 known substitutes for 04-20784: P-1403.1, P-1403.6. Substitute compatibility should be verified for your specific system.
What is the NSN for 04-20784?
04-20784 is cataloged in the U.S. Government catalog under NSN 5330-01-588-8942. This indicates validated use in U.S. government and defense supply chains.
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