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Technical Data Sheet
MS21919DF40 ✓ 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 diameter: 0.204 INCHES NOMINAL IN, material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR CUSHION, 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: 0.796 INCHES MAXIMUM IN, overall_width: 0.500 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-530-4822, 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
MS21919DF40
NSN: 5340-00-530-4822
FSC: 5340
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
diameter0.204 INCHES NOMINAL IN
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR CUSHION
body_width0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
body_height0.140 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
body_length0.796 INCHES MAXIMUM IN
overall_width0.500 INCHES NOMINAL IN
special_featuresCUSHION COLOR YELLOW
style_designatorOFFSET MOUNT
tongue_hole_typeROUND, UNTHREADED
features_providedHERMETICALLY SEALED AND MONOLITHIC AND LOW POWER AND SCHOTTKY
output_logic_formTRANSISTOR-TRANSISTOR LOGIC
surface_treatmentCHROMATE BAND
NSN5340-00-530-4822
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS21919DF40 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
CUSHIONING ENVIRONMENTAL PROTECTION: FUEL RESISTANT AND OZONE RESISTANT
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE: 1.752 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 3215 ASSN STD SINGLE MATERIAL RESPONSE CUSHION
SURFACE TREATMENT: CHROMATE BAND
STYLE DESIGNATOR: OFFSET MOUNT
MATERIAL THICKNESS: 0.063 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541 CL 1A MIL SPEC SINGLE TREATMENT RESPONSE BAND A
TECHNICAL CHARACTERISTICS (FLIS)
CUSHIONING ENVIRONMENTAL PROTECTIONFUEL RESISTANT AND OZONE RESISTANT
SPECIAL FEATURESCUSHION COLOR YELLOW
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE1.752 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 3215 ASSN STD SINGLE MATERIAL RESPONSE CUSHION
SURFACE TREATMENTCHROMATE BAND
STYLE DESIGNATOROFFSET MOUNT
MATERIAL THICKNESS0.063 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541 CL 1A MIL SPEC SINGLE TREATMENT RESPONSE BAND A
DISTANCE FROM LOOP CENTER TO TONGUE END1.970 INCHES NOMINAL IN
OVERALL WIDTH0.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
54LS04DMInterchangeable
interchangeable cross-reference
interchangeable
280-22002-138Interchangeable
interchangeable cross-reference
interchangeable
DM54LS04J/883Interchangeable
interchangeable cross-reference
interchangeable
40-654-2247-08EInterchangeable
interchangeable cross-reference
interchangeable
848295-1Interchangeable
interchangeable cross-reference
interchangeable
B77T0200-74LS04Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS21919DF40?
MS21919DF40 is a MICROCIRCUIT,DIGITAL.
What parts can replace MS21919DF40?
There are 6 known substitutes for MS21919DF40: 54LS04DM, 280-22002-138, DM54LS04J/883 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21919DF40?
MS21919DF40 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-530-4822. This indicates validated use in U.S. government and defense supply chains.
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