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MQD569A — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MQD569A: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: PAPER AND GLUE OVERALL, hole_diameter: 0.281 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 5.813 INCHES NOMINAL IN, aperture_width: 4.313 INCHES NOMINAL IN, overall_length: 8.500 INCHES NOMINAL IN, aperture_length: 6.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-376-0398, 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
MQD569A
NSN: 5330-00-376-0398
FSC: 5330 — Packing and Gasket Materials
CAGE: 91340 — MET-PRO CORPORATION (USA)
SPECIFICATIONS
materialPAPER AND GLUE OVERALL
hole_diameter0.281 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width5.813 INCHES NOMINAL IN
aperture_width4.313 INCHES NOMINAL IN
overall_length8.500 INCHES NOMINAL IN
aperture_length6.750 INCHES NOMINAL IN
special_featuresFOUR BOLT HOLES 0.406 IN. DIA IN
bolt_hole_quantity10
inside_corner_radius0.500 INCHES NOMINAL IN
outside_corner_radius0.438 INCHES NOMINAL IN
cross-sectional_thickness0.031 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN5330-00-376-0398
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MQD569A 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: 0.031 INCHES NOMINAL IN
•
INSIDE CORNER RADIUS: 0.500 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-12803,NO. +3415-A MIL SPEC ALL MATERIAL RESPONSES OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
APERTURE WIDTH: 4.313 INCHES NOMINAL IN
•
APERTURE LENGTH: 6.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.031 INCHES NOMINAL IN
INSIDE CORNER RADIUS0.500 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-12803,NO. +3415-A MIL SPEC ALL MATERIAL RESPONSES OVERALL
OVERALL LENGTH8.500 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL WIDTH5.813 INCHES NOMINAL IN
APERTURE WIDTH4.313 INCHES NOMINAL IN
APERTURE LENGTH6.750 INCHES NOMINAL IN
BOLT HOLE QUANTITY10
SPECIAL FEATURESFOUR BOLT HOLES 0.406 IN. DIA IN
SUBSTITUTES & CROSS-REFERENCES 2
28736Reference document
Same NSN cross-reference
Reference document — Secondary reference
QD569AReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MQD569A?
MQD569A is a GASKET.
What parts can replace MQD569A?
There are 2 known substitutes for MQD569A: 28736, QD569A. Substitute compatibility should be verified for your specific system.
What is the NSN for MQD569A?
MQD569A is cataloged in the U.S. Government catalog under NSN 5330-00-376-0398. 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.