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B11491 — B11491

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

B11491: B11491.

The B11491 is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-00-612-3565, 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
B11491
NSN: 5330-00-612-3565
FSC: 5330 — Packing and Gasket Materials
CAGE: 71724 — JOHN CRANE, INC (USA)
SPECIFICATIONS
Part NumberB11491
NSN5330-00-612-3565
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B11491 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 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 9
NSP-00102Reference document
Same NSN cross-reference
Reference document — Secondary reference
BM50Reference document
Same NSN cross-reference
Reference document — Secondary reference
F-SP-16105-1.50 XF910MO15MReference document
Same NSN cross-reference
Reference document — Secondary reference
LO-7525Reference document
Same NSN cross-reference
Reference document — Secondary reference
F-SP-16105Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
CPS-1500-77 REV BSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 B11491?
B11491 is a B11491.
What parts can replace B11491?
There are 9 known substitutes for B11491: NSP-00102, BM50, F-SP-16105-1.50 XF910MO15M and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B11491?
B11491 is cataloged in the U.S. Government catalog under NSN 5330-00-612-3565. 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.