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Technical Data Sheet
78-624 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

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 OVERALL, thickness: 0.125 INCHES NOMINAL IN, hole_diameter: 0.188 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, nominal_width: 1.000 INCHES IN, overall_length: 0.813 INCHES NOMINAL IN, outside_diameter: 6.125 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-291-5746, 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
78-624
NSN: 5330-00-291-5746
FSC: 5330
CAGE: 65282 — WHITE MOTOR CORP (USA)
SPECIFICATIONS
materialRUBBER OVERALL
thickness0.125 INCHES NOMINAL IN
hole_diameter0.188 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
nominal_width1.000 INCHES IN
overall_length0.813 INCHES NOMINAL IN
outside_diameter6.125 INCHES NOMINAL IN
special_featuresAPPROX 3 TO 4 FT LG;RUBBER WOVEN IN CLOTH FT
style_designatorCOG OR NOTCHED
thread_directionRIGHT-HAND
aperture_diameter5.281 INCHES NOMINAL IN
features_providedW/CLOCK AND BURN IN, MIL-STD-883, CLASS B
output_logic_formTRANSISTOR-TRANSISTOR LOGIC
NSN5330-00-291-5746
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 78-624 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
BOLT CIRCLE DIAMETER: 5.625 INCHES NOMINAL IN
APERTURE DIAMETER: 5.281 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS: 0.031 INCHES NOMINAL IN
OUTSIDE DIAMETER: 6.125 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-12803,NO. +3313-B MIL SPEC ALL MATERIAL RESPONSES OVERALL
HOLE DIAMETER: 0.188 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
MATERIAL: PAPER AND GLUE OVERALL
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
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 (FLIS)
BOLT CIRCLE DIAMETER5.625 INCHES NOMINAL IN
APERTURE DIAMETER5.281 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.031 INCHES NOMINAL IN
OUTSIDE DIAMETER6.125 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-12803,NO. +3313-B MIL SPEC ALL MATERIAL RESPONSES OVERALL
HOLE DIAMETER0.188 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
MATERIALPAPER AND GLUE OVERALL
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
3835-6Interchangeable
interchangeable cross-reference
interchangeable
78624Interchangeable
interchangeable cross-reference
interchangeable
4D5000018Interchangeable
interchangeable cross-reference
interchangeable
78-697Interchangeable
interchangeable cross-reference
interchangeable
41057Interchangeable
interchangeable cross-reference
interchangeable
PAL16L8B4MJ/883BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 78-624?
78-624 is a MICROCIRCUIT,MEMORY.
What parts can replace 78-624?
There are 10 known substitutes for 78-624: 3835-6, 78624, 4D5000018 and 7 more. Substitute compatibility should be verified for your specific system.
Is 78-624 still available?
78-624 is currently cancelled.
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