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Technical Data Sheet
68189 ✓ 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

CYLINDER ASSEMBLY,HYDRAULIC BRAK. Key specifications include color: FLESH, width: 1.000 INCHES NOMINAL IN, length: 3.000 INCHES NOMINAL IN, material: COPPER ALLOY OVERALL, flange_width: 0.4500 INCHES NOMINAL IN, overall_length: 0.2850 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 5340-00-080-5376, 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
68189
NSN: 5340-00-080-5376
FSC: 5340
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
colorFLESH
width1.000 INCHES NOMINAL IN
length3.000 INCHES NOMINAL IN
materialCOPPER ALLOY OVERALL
flange_width0.4500 INCHES NOMINAL IN
overall_length0.2850 INCHES NOMINAL IN
surface_treatmentNICKEL OVERALL
body_outside_diameter0.3800 INCHES NOMINAL IN
material_document_and_classificationQQ-B-626, 1/2 H FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-C-26074 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5340-00-080-5376
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 68189 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
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE: 1.375 INCHES NOMINAL IN
MATERIAL: RUBBER CUSHION
STYLE DESIGNATOR: SINGLE LOOP
LOOP INSIDE DIAMETER: 1.437 INCHES NOMINAL IN
DIAMETER: 0.406 INCHES NOMINAL IN
DISTANCE FROM LOOP CENTER TO TONGUE END: 1.812 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE1.375 INCHES NOMINAL IN
MATERIALRUBBER CUSHION
STYLE DESIGNATORSINGLE LOOP
LOOP INSIDE DIAMETER1.437 INCHES NOMINAL IN
OVERALL WIDTH0.750 INCHES NOMINAL IN
DIAMETER0.406 INCHES NOMINAL IN
MATERIALSTEEL COMP 1010 BAND
DISTANCE FROM LOOP CENTER TO TONGUE END1.812 INCHES NOMINAL IN
MATERIAL THICKNESS0.048 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
68189Interchangeable
interchangeable cross-reference
interchangeable
32-21050Interchangeable
interchangeable cross-reference
interchangeable
9683Interchangeable
interchangeable cross-reference
interchangeable
G106Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 68189?
68189 is a CYLINDER ASSEMBLY,HYDRAULIC BRAK.
What parts can replace 68189?
There are 4 known substitutes for 68189: 68189, 32-21050, 9683 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 68189?
68189 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-080-5376. This indicates validated use in U.S. government and defense supply chains.
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