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4HB906 NON-ASBESTOS — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4HB906 NON-ASBESTOS: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include hole_diameter: 0.437 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, outside_diameter: 6.875 INCHES NOMINAL IN, style_designator: CIRCULAR WITH ONE PERIPHERAL FLAT, aperture_diameter: 4.000 INCHES NOMINAL IN, end_item_identification: 3990-01-444-6174 DISTRIBUTOR,BITUM, cross-sectional_thickness: 0.062 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-574-2882, 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
4HB906 NON-ASBESTOS
NSN: 5330-01-574-2882
FSC: 5330 — Packing and Gasket Materials
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
hole_diameter0.437 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
outside_diameter6.875 INCHES NOMINAL IN
style_designatorCIRCULAR WITH ONE PERIPHERAL FLAT
aperture_diameter4.000 INCHES NOMINAL IN
bolt_hole_quantity6
end_item_identification3990-01-444-6174 DISTRIBUTOR,BITUM
cross-sectional_thickness0.062 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
part_name_assigned_by_controlling_agencyGASKET FLANGE 4 INCH 3-WAY IN
NSN5330-01-574-2882
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4HB906 NON-ASBESTOS 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
•
CROSS-SECTIONAL THICKNESS: 0.062 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR WITH ONE PERIPHERAL FLAT
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
OUTSIDE DIAMETER: 6.875 INCHES NOMINAL IN
•
APERTURE DIAMETER: 4.000 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 6
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.062 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR WITH ONE PERIPHERAL FLAT
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE DIAMETER6.875 INCHES NOMINAL IN
APERTURE DIAMETER4.000 INCHES NOMINAL IN
BOLT HOLE QUANTITY6
PART NAME ASSIGNED BY CONTROLLING AGENCYGASKET FLANGE 4 INCH 3-WAY IN
END ITEM IDENTIFICATION3990-01-444-6174 DISTRIBUTOR,BITUM
HOLE DIAMETER0.437 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4HB906 NON-ASBESTOS?
4HB906 NON-ASBESTOS is a GASKET.
What is the NSN for 4HB906 NON-ASBESTOS?
4HB906 NON-ASBESTOS is cataloged in the U.S. Government catalog under NSN 5330-01-574-2882. 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.