YNF17726 283-6179 CAT 311D bucket cylinder seal kit
CAT 311D bucket hydraulic cylinder repair seals
283-6179 bucket cylinder overhaul seal set
Excavator bucket cylinder seal kit replacement
YNF17726 Caterpillar 311D bucket seal components
Heavy-duty hydraulic seal kit for bucket cylinder
CAT excavator bucket seal rings and O-rings
Durable bucket cylinder rebuild kit for CAT 311D
YNF17726 283-6179 CAT 311D bucket cylinder seal kit
CAT 311D bucket hydraulic cylinder repair seals
283-6179 bucket cylinder overhaul seal set
Excavator bucket cylinder seal kit replacement
YNF17726 Caterpillar 311D bucket seal components
Heavy-duty hydraulic seal kit for bucket cylinder
CAT excavator bucket seal rings and O-rings
Durable bucket cylinder rebuild kit for CAT 311D

YNF17726 Bucket Cylinder Seal Kit 283-6179 CAT 311D Hydraulic Bucket Cylinder Repair Kit Excavator Seal Set

High-pressure bucket cylinder seal kit for CAT 311D, ensuring strong sealing, smooth bucket motion, and leak-free hydraulic operation.

  • OEM-compatible 283-6179 bucket cylinder seal kit

  • Designed for CAT 311D bucket hydraulic cylinder

  • High-pressure sealing materials ensure long operational life

  • Complete kit includes piston seals, rod seals, O-rings, wear rings

  • Restores lifting force and improves bucket movement accuracy

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CAT 311D Bucket Cylinder Seal Kit Description

The YNF17726 Bucket Cylinder Seal Kit, replacing 283-6179, is designed specifically for the CAT 311D excavator bucket cylinder. As one of the most frequently operated hydraulic cylinders on the machine, the bucket cylinder requires reliable sealing to maintain stable digging force, prevent oil leakage, and ensure accurate bucket control. Worn seals often cause drifting, weak breakout force, uneven bucket response, or hydraulic contamination.

This seal kit includes all essential components—rod seals, piston seals, dust seals, buffer rings, and wear rings—manufactured from high-strength polyurethane, rubber, and PTFE compounds. These materials are engineered to withstand high pressure, abrasive environments, and continuous motion during excavation work.

Widely used by heavy equipment workshops, fleet maintenance teams, and aftermarket parts distributors, this seal kit provides a durable, cost-effective solution for restoring CAT 311D bucket cylinder performance.

CAT 311D Bucket Cylinder Seal Kit Technical Data Sheet

Parameter Details
YNF Part Number YNF17726
OEM Number 283-6179
Machine Model CAT 311D
Component Bucket Cylinder Seal Kit
Included Components Rod seal, piston seal, dust seal, O-rings, wear rings
Material PU / Rubber / PTFE / High-pressure compounds
Function Restores bucket hydraulic performance and prevents leakage
Application Bucket cylinder overhaul
Brand YNF
Origin China
MOQ 1 Set
Shipping Options Air, Sea, Express
Payment Terms T/T, PayPal, Western Union

CAT 311D Bucket Cylinder Seal Kit Applications

Application Area Description
Bucket Cylinder Rebuild Restores sealing and digging force
CAT 311D Excavator Maintenance OEM-fit replacement for 283-6179
Hydraulic Leakage Repair Stops oil leakage and prevents cylinder pressure loss
Heavy-Duty Excavation Work Ensures stable bucket movement during digging operations
Aftermarket Seal Kit Distribution Suitable for wholesalers and repair workshops

CAT 311D Bucket Seal Kit Detail Display

FAQs

Related Products:

  • CAT 311D Boom Cylinder Seal Kit (283-6179)

  • CAT 311D Arm Cylinder Seal Kit

  • CAT Excavator Hydraulic Cylinder Repair Parts

  • Hydraulic Pump & Control Valve Seal Sets

FAQs：

  • Q: Is this seal kit compatible with the CAT 311D bucket cylinder?
    A: Yes, it is specifically designed for the 311D.

  • Q: What issues does it fix?
    A: Oil leakage, weak bucket force, drifting, and pressure drop.

  • Q: Is it a complete kit?
    A: Yes, it includes all sealing components required for a full rebuild.

  • Q: MOQ?
    A: 1 set.

Get Free Quote for CAT 311D Bucket Seal Kit

The YNF17726 283-6179 Bucket Cylinder Seal Kit delivers high-pressure sealing performance for CAT 311D excavators. With durable PU, rubber, and PTFE components, it restores bucket power, reduces downtime, and ensures reliable hydraulic operation. YNF Machinery offers stable quality, competitive wholesale pricing, and fast global shipping—ideal for repair shops, machine fleets, and aftermarket distributors. Contact us now for the best B2B quotation.

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