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90305-9 — MICROCIRCUIT,MEMORY

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

90305-9: MICROCIRCUIT,MEMORY.

The MICROCIRCUIT,MEMORY is a the manufacturer memory module engineered for enterprise server and workstation platforms requiring validated, high-reliability memory. Key specifications include material: RUBBER SILICONE CLASS Q, body_width: 0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN, body_height: 0.140 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN, body_length: 1.060 INCHES MAXIMUM IN, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 0.555 INCHES MINIMUM AND 0.577 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-724-7902, 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
90305-9
NSN: 5331-00-724-7902
NIINs: 007247902, 014302121
FSC: 5331 — O-ring
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialRUBBER SILICONE CLASS Q
body_width0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
body_height0.140 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
body_length1.060 INCHES MAXIMUM IN
hardness_rating70.0 SHORE DUROMETER A NOMINAL
outside_diameter0.555 INCHES MINIMUM AND 0.577 INCHES MAXIMUM IN
special_featuresALTERED ITEM PROGRAMMABLE TO DRWG. 90305-9 MAKE FROM 5962-8851503RA
features_providedHERMETICALLY SEALED AND BURN IN AND PROGRAMMABLE AND BIPOLAR AND MONOLITHIC AND ELECTROSTATIC SENSITIVE
output_logic_formTRANSISTOR-TRANSISTOR LOGIC
inclosure_materialCERAMIC
memory_device_typePAL
storage_temp_range-65.0 TO 150.0 CELSIUS DEGC
NSN5331-00-724-7902
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 90305-9 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 HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.555 INCHES MINIMUM AND 0.577 INCHES MAXIMUM IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
CENTER HOLE DIAMETER: 0.421 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN
•
MATERIAL: RUBBER SILICONE CLASS Q
TYPICAL APPLICATIONS
  • Server memory expansion for virtualization workloads
  • Database performance optimization (in-memory computing)
  • VDI and remote desktop session hosting
  • High-performance computing (HPC) clusters
  • Mail server and collaboration platform scaling
  • Application server tier expansion
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.555 INCHES MINIMUM AND 0.577 INCHES MAXIMUM IN
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
ELONGATION PERCENTAGE125 MAXIMUM
CENTER HOLE DIAMETER0.421 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN
MATERIALRUBBER SILICONE CLASS Q
SUBSTITUTES & CROSS-REFERENCES 8
2-013 S604-70Reference document
Same NSN cross-reference
Reference document — Secondary reference
109A903059Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
07A568-013SSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
013-7117Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MS9068-013Reference document
Same NSN cross-reference
Reference document — Secondary reference
72910PC35Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90305-9?
90305-9 is a MICROCIRCUIT,MEMORY.
What parts can replace 90305-9?
There are 8 known substitutes for 90305-9: 2-013 S604-70, 109A903059, 07A568-013S and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 90305-9?
90305-9 is cataloged in the U.S. Government catalog under NSN 5331-00-724-7902. 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.