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Technical Data Sheet
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8491AM — GASKET,FLOATATION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

8491AM: GASKET,FLOATATION.

The GASKET,FLOATATION is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-00-019-9442, 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
8491AM
NSN: 5330-00-019-9442
NIINs: 000199442, 015460756
FSC: 5330 — Packing and Gasket Materials
CAGE: 98021 — HALKEY-ROBERTS CORP DBA HALKEY-ROBERTS CORP (USA)
SPECIFICATIONS
Part Number8491AM
NSN5330-00-019-9442
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 8491AM 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 5
F4115-000174Reference document
Same NSN cross-reference
Reference document — Informative reference only
961051Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
BDI 12150-4-8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ME80/4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
C849-1-AMSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8491AM?
8491AM is a GASKET,FLOATATION.
What parts can replace 8491AM?
There are 5 known substitutes for 8491AM: F4115-000174, 961051, BDI 12150-4-8 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 8491AM?
8491AM is cataloged in the U.S. Government catalog under NSN 5330-00-019-9442. This indicates validated use in U.S. government and defense supply chains.
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