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766728 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

766728: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include hole_diameter: 0.198 INCHES MINIMUM AND 0.213 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 3.375 INCHES NOMINAL IN, aperture_width: 2.375 INCHES NOMINAL IN, overall_length: 4.625 INCHES NOMINAL IN, aperture_length: 3.625 INCHES NOMINAL IN, hardness_rating: 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-072-9549, 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
766728
NSN: 5330-00-072-9549
FSC: 5330 — Packing and Gasket Materials
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU OVERALL
hole_diameter0.198 INCHES MINIMUM AND 0.213 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
overall_width3.375 INCHES NOMINAL IN
aperture_width2.375 INCHES NOMINAL IN
overall_length4.625 INCHES NOMINAL IN
aperture_length3.625 INCHES NOMINAL IN
hardness_rating55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL
style_designatorNON-CIRCULAR
bolt_hole_quantity10
inside_corner_radius0.125 INCHES NOMINAL IN
outside_corner_radius0.375 INCHES NOMINAL IN
cross-sectional_thickness0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
NSN5330-00-072-9549
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 766728 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
•
INSIDE CORNER RADIUS: 0.125 INCHES NOMINAL IN
•
HARDNESS RATING: 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL
•
STYLE DESIGNATOR: NON-CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D2000 2BG15A1B1F2 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
INSIDE CORNER RADIUS0.125 INCHES NOMINAL IN
HARDNESS RATING55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL
STYLE DESIGNATORNON-CIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D2000 2BG15A1B1F2 ASSN STD ALL MATERIAL RESPONSES OVERALL
OVERALL LENGTH4.625 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL WIDTH3.375 INCHES NOMINAL IN
APERTURE WIDTH2.375 INCHES NOMINAL IN
APERTURE LENGTH3.625 INCHES NOMINAL 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 766728?
766728 is a GASKET.
What is the NSN for 766728?
766728 is cataloged in the U.S. Government catalog under NSN 5330-00-072-9549. 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.