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028 09378 000 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

028 09378 000: O-RING.

The O-RING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5331-00-582-2133, 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
028 09378 000
NSN: 5331-00-582-2133
FSC: 5331 — O-ring
CAGE: 66935 — JOHNSON CONTROLS NAVY SYSTEMS, LLC (USA)
SPECIFICATIONS
Part Number028 09378 000
NSN5331-00-582-2133
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 028 09378 000 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
SUBSTITUTES & CROSS-REFERENCES 9
D50265 ITEM 30Reference document
Same NSN cross-reference
Reference document — Secondary reference
NK1648Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
755 941Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MS28784-11ESReference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-AS28775Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
MS28775-011Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 028 09378 000?
028 09378 000 is a O-RING.
What parts can replace 028 09378 000?
There are 9 known substitutes for 028 09378 000: D50265 ITEM 30, NK1648, 755 941 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 028 09378 000?
028 09378 000 is cataloged in the U.S. Government catalog under NSN 5331-00-582-2133. 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.