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Technical Data Sheet
55188 ✓ 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,DIGITAL is a the manufacturer industrial component. Key specifications include material: STEEL CASE, body_width: 0.245 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN, case_style: SQUARE, seal_width: 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN, body_height: 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN, body_length: 0.755 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-641-0992, 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
55188
NSN: 5330-00-641-0992
FSC: 5330
CAGE: 76680 — FEDERAL-MOGUL CORP CHASSIS PRODUCTS DIV (USA)
SPECIFICATIONS
materialSTEEL CASE
body_width0.245 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN
case_styleSQUARE
seal_width0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
body_height0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
body_length0.755 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN
special_featuresWEAPON SYSTEM ESSENTIAL
features_providedBURN IN, MIL-STD-883, CLASS B
output_logic_formTRANSISTOR-TRANSISTOR LOGIC
inclosure_materialCERAMIC
operating_temp_range-55.0 TO 125.0 CELSIUS DEGC
housing_bore_diameter5.126 INCHES NOMINAL IN
NSN5330-00-641-0992
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 55188 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
HOUSING BORE DIAMETER: 5.126 INCHES NOMINAL IN
MATERIAL: STEEL CASE
SEALING ELEMENT STYLE: ANGULAR
ACCOMMODATED SHAFT DIAMETER: 4.000 INCHES NOMINAL IN
CASE STYLE: SQUARE
SEAL WIDTH: 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
TECHNICAL CHARACTERISTICS (FLIS)
HOUSING BORE DIAMETER5.126 INCHES NOMINAL IN
MATERIALSTEEL CASE
SEALING ELEMENT STYLEANGULAR
ACCOMMODATED SHAFT DIAMETER4.000 INCHES NOMINAL IN
MATERIALLEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
CASE STYLESQUARE
SEAL WIDTH0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
8024Interchangeable
interchangeable cross-reference
interchangeable
J7126Interchangeable
interchangeable cross-reference
interchangeable
J7026Interchangeable
interchangeable cross-reference
interchangeable
812234Interchangeable
interchangeable cross-reference
interchangeable
051243Interchangeable
interchangeable cross-reference
interchangeable
5124Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 55188?
55188 is a MICROCIRCUIT,DIGITAL.
What parts can replace 55188?
There are 27 known substitutes for 55188: 8024, J7126, J7026 and 24 more. Substitute compatibility should be verified for your specific system.
Is 55188 still available?
55188 is currently cancelled.
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