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3220990 — CIRCUIT CARD ASSEMBLY

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

3220990: CIRCUIT CARD ASSEMBLY.

The CIRCUIT CARD ASSEMBLY is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, rim_surface_width: 0.125 INCHES NOMINAL IN, peripheral_diameter: 2.406 INCHES NOMINAL IN, center_hole_diameter: 1.855 INCHES MINIMUM AND 1.865 INCHES MAXIMUM IN, cross-sectional_height: 0.375 INCHES NOMINAL IN, cross-sectional_thickness: 0.165 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-364-3979, 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
3220990
NSN: 5330-00-364-3979
NIINs: 003643979, 010637060
FSC: 5330 — Packing and Gasket Materials
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
rim_surface_width0.125 INCHES NOMINAL IN
peripheral_diameter2.406 INCHES NOMINAL IN
center_hole_diameter1.855 INCHES MINIMUM AND 1.865 INCHES MAXIMUM IN
cross-sectional_height0.375 INCHES NOMINAL IN
cross-sectional_thickness0.165 INCHES NOMINAL IN
cross-sectional_shape_styleFLANGE
NSN5330-00-364-3979
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3220990 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: 0.165 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.375 INCHES NOMINAL IN
•
RIM SURFACE WIDTH: 0.125 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: FLANGE
•
PERIPHERAL DIAMETER: 2.406 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.855 INCHES MINIMUM AND 1.865 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.165 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.375 INCHES NOMINAL IN
RIM SURFACE WIDTH0.125 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEFLANGE
PERIPHERAL DIAMETER2.406 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.855 INCHES MINIMUM AND 1.865 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY OVERALL
SUBSTITUTES & CROSS-REFERENCES 6
3244374Reference document
Same NSN cross-reference
Reference document — Secondary reference
3237856Reference document
Same NSN cross-reference
Reference document — Secondary reference
3272933Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
3241782Reference document
Same NSN cross-reference
Reference document — Secondary reference
3241792Reference document
Same NSN cross-reference
Reference document — Secondary reference
3226878Reference 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 3220990?
3220990 is a CIRCUIT CARD ASSEMBLY.
What parts can replace 3220990?
There are 6 known substitutes for 3220990: 3244374, 3237856, 3272933 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3220990?
3220990 is cataloged in the U.S. Government catalog under NSN 5330-00-364-3979. 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.