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R521439 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

R521439: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include end_item_identification: PU-820/T, GENERATOR SET, DIESEL ENGINE, part_name_assigned_by_controlling_agency: EXHAUST GASKET. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-292-2440, 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
R521439
NSN: 5330-01-292-2440
NIINs: 012922440, 015333138
FSC: 5330 — Packing and Gasket Materials
CAGE: 66836 — DEERE & COMPANY DIV DEERE POWER SYSTEMS GROUP (USA)
SPECIFICATIONS
end_item_identificationPU-820/T, GENERATOR SET, DIESEL ENGINE
part_name_assigned_by_controlling_agencyEXHAUST GASKET
NSN5330-01-292-2440
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: R521439 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
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYEXHAUST MANIFOLD PORT GASKET
SUBSTITUTES & CROSS-REFERENCES 3
R90658Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
223547Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
3000310-002Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is R521439?
R521439 is a GASKET.
What parts can replace R521439?
There are 3 known substitutes for R521439: R90658, 223547, 3000310-002. Substitute compatibility should be verified for your specific system.
What is the NSN for R521439?
R521439 is cataloged in the U.S. Government catalog under NSN 5330-01-292-2440. This indicates validated use in U.S. government and defense supply chains.
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