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Technical Data Sheet
021749 ✓ 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 BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. Key specifications include overall_length: 110.0 MILLIMETERS NOMINAL MM, part_name_assigned_by_controlling_agency: MANIPULATOR NUCLEUS DRYDALE 110MM LG RD KNURLED HANDLE MM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-737-2351, 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
021749
NSN: 5340-00-737-2351
FSC: 5340
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
overall_length110.0 MILLIMETERS NOMINAL MM
special_featuresDRYSDALE NUCLEUS MANIPULATOR, FLATTENED PADDLE TIP WITH GENEROUS SURFACE AREA IS IDEAL FOR MANIPULATING TISSUE, ROTATING AND CRACKING THE NUCLEUS. ROUND KNURLED HANDLE
part_name_assigned_by_controlling_agencyMANIPULATOR NUCLEUS DRYDALE 110MM LG RD KNURLED HANDLE MM
NSN5340-00-737-2351
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 021749 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
21749Interchangeable
interchangeable cross-reference
interchangeable
8640279P1Interchangeable
interchangeable cross-reference
interchangeable
1X2492Interchangeable
interchangeable cross-reference
interchangeable
5133-75Interchangeable
interchangeable cross-reference
interchangeable
E21A80-2STSCInterchangeable
interchangeable cross-reference
interchangeable
P48A19-80Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 021749?
021749 is a BOOT,DUST AND MOISTURE SEAL.
What parts can replace 021749?
There are 20 known substitutes for 021749: 21749, 8640279P1, 1X2492 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 021749?
021749 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-737-2351. This indicates validated use in U.S. government and defense supply chains.
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