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Technical Data Sheet
525531 ✓ 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 case_style: SQUARE, seal_width: 0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN, special_features: PROGRAMMED PAL16R8-20, memory_device_type: PAL, operating_temp_range: -55.0 TO 125.0 CELSIUS DEGC, inclosure_configuration: DUAL-IN-LINE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-444-7981, 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
525531
NSN: 5330-00-444-7981
FSC: 5330
CAGE: 80201 — SKF USA INC. DBA SKF AEROSPACE SEALING SOLUTIONS (USA)
SPECIFICATIONS
case_styleSQUARE
seal_width0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
special_featuresPROGRAMMED PAL16R8-20
memory_device_typePAL
operating_temp_range-55.0 TO 125.0 CELSIUS DEGC
inclosure_configurationDUAL-IN-LINE
terminal_type_and_quantity20 PRINTED CIRCUIT
accommodated_shaft_diameter1.497 INCHES MINIMUM AND 1.503 INCHES MAXIMUM IN
time_rating_per_chacteristic20.00 NANOSECONDS MAXIMUM INPUT TO OUTPUT ACCESS NS
voltage_rating_and_type_per_characteristic5.0 VOLTS NOMINAL POWER SOURCE
NSN5330-00-444-7981
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 525531 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
ACCOMMODATED SHAFT DIAMETER: 1.497 INCHES MINIMUM AND 1.503 INCHES MAXIMUM IN
SEAL WIDTH: 0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
CASE STYLE: SQUARE
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)
ACCOMMODATED SHAFT DIAMETER1.497 INCHES MINIMUM AND 1.503 INCHES MAXIMUM IN
SEAL WIDTH0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
CASE STYLESQUARE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
725926-50Interchangeable
interchangeable cross-reference
interchangeable
52553-1Interchangeable
interchangeable cross-reference
interchangeable
ROM/PROM FAMILY 162Interchangeable
interchangeable cross-reference
interchangeable
738533-2Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 525531?
525531 is a MICROCIRCUIT,MEMORY.
What parts can replace 525531?
There are 4 known substitutes for 525531: 725926-50, 52553-1, ROM/PROM FAMILY 162 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 525531?
525531 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-444-7981. This indicates validated use in U.S. government and defense supply chains.
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