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Technical Data Sheet
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D78486 — D78486

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

D78486: D78486.

The D78486 is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-01-210-7585, 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
D78486
NSN: 5330-01-210-7585
FSC: 5330 — Packing and Gasket Materials
CAGE: 58849 — FMC TECHNOLOGIES INC DIV MATERIAL HANDLING SOLUTIONS (USA)
SPECIFICATIONS
general_characteristics_item_descriptionCONSIST OF 2 PIECE SYNTHETIC RUBBER MIL-R-3065 INFLATABLE SEALING RING,OUTSIDE DIAMETER 32.625 MINIMUM,30.125 SHAFT DIAMETER
NSN5330-01-210-7585
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D78486 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: CONSIST OF 2 PIECE SYNTHETIC RUBBER MIL-R-3065 INFLATABLE SEALING RING,OUTSIDE DIAMETER 32.625 MINIMUM,30.125 SHAFT DIAMETER
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCONSIST OF 2 PIECE SYNTHETIC RUBBER MIL-R-3065 INFLATABLE SEALING RING,OUTSIDE DIAMETER 32.625 MINIMUM,30.125 SHAFT DIAMETER
SUBSTITUTES & CROSS-REFERENCES 2
78486Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
D78487 PIECE 1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is D78486?
D78486 is a D78486.
What parts can replace D78486?
There are 2 known substitutes for D78486: 78486, D78487 PIECE 1. Substitute compatibility should be verified for your specific system.
What is the NSN for D78486?
D78486 is cataloged in the U.S. Government catalog under NSN 5330-01-210-7585. 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.