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256999-AS — GASKET SET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

256999-AS: GASKET SET.

The GASKET SET is a the manufacturer industrial component. Key specifications include component_quantity: 41, component_document_origin: INDUSTRIAL. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-705-2861, 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
256999-AS
NSN: 5330-00-705-2861
FSC: 5330 — Packing and Gasket Materials
CAGE: 1ML14 — BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING (USA)
SPECIFICATIONS
component_quantity41
component_document_originINDUSTRIAL
NSN5330-00-705-2861
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 256999-AS 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
•
COMPONENT QUANTITY: 41
•
COMPONENT DOCUMENT ORIGIN: INDUSTRIAL
•
NONSUPPLY ITEMS AND QUANTITIES: 255652-A SIDE COVER PLATE GASKET2,76109-A SIDE COVER PLATE SCREW GASKET 8,255401-C BELLHOUSING ATTACHING GASKET 1,255191-C OIL PAN GASKET 2,255/85-A OIL PAN SEAL 2,296-A OIL PAN DR.PLUG GASKET 1,255401-C GEAR HOUSING GASKET 1,255034-C GEAR HOUSING COVER GASKET 1,255252-A OIL FILTER ATTACHING GASKET 1,29949-A OIL FILTER GASKET CASE 1,255213-C CYLINDER HEAD COVER GASKET 1,33180-A BREATHER GASKET 1,255360-A WATER PUMP ATTACHING GASKET 1,255371-C WATER PUMP COVER GASKET 1,255365-A WATER PUMP INLET ELBOW GASKET 1,255701-A THERMO.HOUSING GASKET 1,203432-A THERMO.SEAL RING 1,87-A AIR INTAKE MANIFOLD GASKET 2,76036-A EXHAUST MANIFOLD GASKET 4,255762-A FUEL PUMP ATTACHING GASKET 1,203347-A FUEL OIL FILTER GASKET 1,127237-A FUEL OIL FILTER GASKET 1,260685-A AIR CLEANER GASKET 1,255752-A TACH.DRIVE COVER GASKET 1,127243-A FUEL FILER GASKET 1,200026-A FUEL FILER GASKET 1,255359-C WATER PUMP COVER GASKET 1
TECHNICAL CHARACTERISTICS
COMPONENT QUANTITY41
COMPONENT DOCUMENT ORIGININDUSTRIAL
NONSUPPLY ITEMS AND QUANTITIES255652-A SIDE COVER PLATE GASKET2,76109-A SIDE COVER PLATE SCREW GASKET 8,255401-C BELLHOUSING ATTACHING GASKET 1,255191-C OIL PAN GASKET 2,255/85-A OIL PAN SEAL 2,296-A OIL PAN DR.PLUG GASKET 1,255401-C GEAR HOUSING GASKET 1,255034-C GEAR HOUSING COVER GASKET 1,255252-A OIL FILTER ATTACHING GASKET 1,29949-A OIL FILTER GASKET CASE 1,255213-C CYLINDER HEAD COVER GASKET 1,33180-A BREATHER GASKET 1,255360-A WATER PUMP ATTACHING GASKET 1,255371-C WATER PUMP COVER GASKET 1,255365-A WATER PUMP INLET ELBOW GASKET 1,255701-A THERMO.HOUSING GASKET 1,203432-A THERMO.SEAL RING 1,87-A AIR INTAKE MANIFOLD GASKET 2,76036-A EXHAUST MANIFOLD GASKET 4,255762-A FUEL PUMP ATTACHING GASKET 1,203347-A FUEL OIL FILTER GASKET 1,127237-A FUEL OIL FILTER GASKET 1,260685-A AIR CLEANER GASKET 1,255752-A TACH.DRIVE COVER GASKET 1,127243-A FUEL FILER GASKET 1,200026-A FUEL FILER GASKET 1,255359-C WATER PUMP COVER GASKET 1
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 256999-AS?
256999-AS is a GASKET SET.
What is the NSN for 256999-AS?
256999-AS is cataloged in the U.S. Government catalog under NSN 5330-00-705-2861. 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.