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Technical Data Sheet
89B ✓ Verified by PartsTable
· MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The CASE,RESISTOR is a the manufacturer industrial component. Key specifications include material: ASBESTOS AND STEEL OVERALL, overall_width: 3.5000 INCHES NOMINAL IN, overall_height: 1.5000 INCHES NOMINAL IN, overall_length: 10.0000 INCHES NOMINAL IN, outside_diameter: 6.250 INCHES NOMINAL IN, style_designator: CIRCULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-274-3219, 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
MRO MRO_GENERAL 89B
NSN: 5340-00-274-3219
FSC: 5340
CAGE: 64959 — AMERICAN TELEPHONE AND TELEGRAPH CO (USA)
SPECIFICATIONS
materialASBESTOS AND STEEL OVERALL
overall_width3.5000 INCHES NOMINAL IN
overall_height1.5000 INCHES NOMINAL IN
overall_length10.0000 INCHES NOMINAL IN
outside_diameter6.250 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter5.625 INCHES NOMINAL IN
end_item_identificationW/S:ADVANCED AIR TRAFFIC CONTR. & LAND. SYS (ATCALS) 404L;
cross-sectional_thickness0.312 INCHES NOMINAL IN
cross-sectional_shape_styleMETAL AND NONMETALLIC MATERIALS
general_characteristics_item_descriptionMATL MOLDED PLASTIC; INCL PANEL NUT,LOCK WASHER; 1.210 IN. LG; 0.375 IN. W; 0.375 IN. H; 5/16-32 UNEF THD; 0.115 IN. DIA SCREWDRIVER HOLE IN
NSN5340-00-274-3219
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 89B 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
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT1.5000 INCHES NOMINAL IN
END ITEM IDENTIFICATIONW/S:ADVANCED AIR TRAFFIC CONTR. & LAND. SYS (ATCALS) 404L;
OVERALL WIDTH3.5000 INCHES NOMINAL IN
OVERALL LENGTH10.0000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
77071Interchangeable
interchangeable cross-reference
interchangeable
A148077071Interchangeable
interchangeable cross-reference
interchangeable
89ERESIST0RInterchangeable
interchangeable cross-reference
interchangeable
89EInterchangeable
interchangeable cross-reference
interchangeable
89BARESIST0RInterchangeable
interchangeable cross-reference
interchangeable
89BAInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 89B?
89B is a CASE,RESISTOR. It is classified as a MRO (MRO_GENERAL).
What parts can replace 89B?
There are 18 known substitutes for 89B: 77071, A148077071, 89ERESIST0R and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 89B?
89B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-274-3219. This indicates validated use in U.S. government and defense supply chains.
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