PartsTable
Technical Data Sheet

B05-L/090 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

B05-L/090: O-RING.

The O-RING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5331-01-393-5639, 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
B05-L/090
NSN: 5331-01-393-5639
FSC: 5331 — O-ring
CAGE: J1802 — KUBOTA CORPORATION (JPN)
SPECIFICATIONS
Part NumberB05-L/090
NSN5331-01-393-5639
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B05-L/090 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
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES 4
B06-L REFERENCE 050Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
B05-L REFERENCE 090Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
B06-L/050Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
04724-00120Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B05-L/090?
B05-L/090 is a O-RING.
What parts can replace B05-L/090?
There are 4 known substitutes for B05-L/090: B06-L REFERENCE 050, B05-L REFERENCE 090, B06-L/050 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B05-L/090?
B05-L/090 is cataloged in the U.S. Government catalog under NSN 5331-01-393-5639. 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.