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Technical Data Sheet
A4891 ✓ 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 CORE ASSEMBLY,FLUID COOLER is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY TUBES, core_width: 11.750 INCHES NOMINAL IN, core_height: 19.063 INCHES NOMINAL IN, core_length: 7.500 INCHES NOMINAL IN, tube_quantity: 197, tube_attachment_method: BRAZED BOTH ENDS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-353-2993, 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
A4891
NSN: 5340-00-353-2993
FSC: 5340
CAGE: 78640 — MITSUBISHI CATERPILLAR FORKLIFT AMERICA, INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY TUBES
core_width11.750 INCHES NOMINAL IN
core_height19.063 INCHES NOMINAL IN
core_length7.500 INCHES NOMINAL IN
tube_quantity197
tube_attachment_methodBRAZED BOTH ENDS
effective_heat_transfer_surface_area93.1 SQUARE FEET
material_document_and_classificationMIL-C-15726,COMP 70-30 MIL SPEC SINGLE MATERIAL RESPONSE TUBES
NSN5340-00-353-2993
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A4891 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
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
NAVAL REPAIR PARTUpgraded Successor
successor cross-reference
successor
2930Upgraded Successor
successor cross-reference
successor
38450Upgraded Successor
successor cross-reference
successor
PE/SK 4966Upgraded Successor
successor cross-reference
successor
3845Upgraded Successor
successor cross-reference
successor
12203Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A4891?
A4891 is a CORE ASSEMBLY,FLUID COOLER.
What parts can replace A4891?
There are 23 known substitutes for A4891: NAVAL REPAIR PART, 2930, 38450 and 20 more. Substitute compatibility should be verified for your specific system.
Is A4891 still available?
A4891 is currently cancelled.
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