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704AS6399 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

704AS6399: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR OVERALL, hole_diameter: 0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 10.200 INCHES MINIMUM AND 10.300 INCHES MAXIMUM IN, aperture_width: 9.200 INCHES MINIMUM AND 9.300 INCHES MAXIMUM IN, overall_length: 10.200 INCHES MINIMUM AND 10.300 INCHES MAXIMUM IN, aperture_length: 9.200 INCHES MINIMUM AND 9.300 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-198-1732, 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
704AS6399
NSN: 5330-01-198-1732
FSC: 5330 — Packing and Gasket Materials
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR OVERALL
hole_diameter0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width10.200 INCHES MINIMUM AND 10.300 INCHES MAXIMUM IN
aperture_width9.200 INCHES MINIMUM AND 9.300 INCHES MAXIMUM IN
overall_length10.200 INCHES MINIMUM AND 10.300 INCHES MAXIMUM IN
aperture_length9.200 INCHES MINIMUM AND 9.300 INCHES MAXIMUM IN
style_designatorNON-CIRCULAR
bolt_hole_quantity12
cross-sectional_thickness0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-R-6855 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
outside_edge_to_bolt_hole_center_distance_along_width1.250 INCHES NOMINAL IN
NSN5330-01-198-1732
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 704AS6399 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: 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: NON-CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-6855 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
APERTURE WIDTH: 9.200 INCHES MINIMUM AND 9.300 INCHES MAXIMUM IN
•
APERTURE LENGTH: 9.200 INCHES MINIMUM AND 9.300 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
STYLE DESIGNATORNON-CIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-6855 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH10.200 INCHES MINIMUM AND 10.300 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL WIDTH10.200 INCHES MINIMUM AND 10.300 INCHES MAXIMUM IN
APERTURE WIDTH9.200 INCHES MINIMUM AND 9.300 INCHES MAXIMUM IN
APERTURE LENGTH9.200 INCHES MINIMUM AND 9.300 INCHES MAXIMUM IN
BOLT HOLE QUANTITY12
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH3.875 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 2
896399-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
X704AS6399Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 704AS6399?
704AS6399 is a GASKET.
What parts can replace 704AS6399?
There are 2 known substitutes for 704AS6399: 896399-1, X704AS6399. Substitute compatibility should be verified for your specific system.
What is the NSN for 704AS6399?
704AS6399 is cataloged in the U.S. Government catalog under NSN 5330-01-198-1732. 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.