247-8888 Bucket Cylinder Seal Kit 2478888 for Caterpillar Excavators

Short Description:

247-8888 Seal Kit for Caterpillar Excavators Hydraulic Bucket Cylinder Repair, fit for CAT 320D GC 320D L 319D L 319D LN 323D L 323D LN 320D LRR 324D L 321D LCR 320D FM 321C 320D 323D SA 320D LN 320D


  • Application: Excavators
  • Part number: 247-8888
  • Sizes: Standard or Custom
  • Compatible Model: Cat 320D GC 320D L 319D L 319D LN 323D L 323D LN 320D LRR 324D L 321D LCR 320D FM 321C 320D 323D SA 320D LN 320D RR 324D 323D
  • Price: Negotiable
  • Payment Terms: L/C, T/T, Paypal, Western Union, Bank Transfer and more
  • Packaging: PP Bag Inside,Carton Box Outside or Custom
  • Material: Standard or customized

Product Detail

Product Tags

247-8888 Seal Kit for Caterpillar Excavators Hydraulic Bucket Cylinder Repair, fit for CAT 320D GC 320D L 319D L 319D LN 323D L 323D LN 320D LRR 324D L 321D LCR 320D FM 321C 320D 323D SA 320D LN 320D RR 324D 323D – Support-OEM-High-Quality

Product Overview

The ​​247-8888 Bucket Cylinder Seal Kit​​ is a precision-engineered repair solution designed specifically for ​​bucket cylinders​​ on Caterpillar 320D, 320DGC, 323DL, 324DL and more CAT excavators. This kit eliminates hydraulic leaks caused by worn seals, restoring factory-grade pressure integrity for optimal bucket control during digging, grading, and trenching operations.

247-8888 Seal Kit Specifications

​​Parameter​​ ​​Specification​​
​​Compatible Models​​ Cat 320D GC 320D L 319D L 319D LN 323D L 323D LN 320D LRR 324D L 321D LCR 320D FM 321C 320D 323D SA 320D LN 320D RR 324D 323D
​​Application​​ Complete cylinder rebuild – Includes rod seals, piston seals, and wear components
​​Pressure Rating​​ 0–35 MPa (5,076 PSI) – Matches Cat HEUI System Standards
​​Temperature Range​​ -30°C to +110°C (-22°F to +230°F) – Suitable for all climate conditions
​​Seal Material​​ Grade 8 Polyurethane (PUR) Rod Seals + Nitrile (NBR) Buffer Rings
​​Critical Add-Ons​​ PTFE-Reinforced Wear Bands, Double-Lip Wiper, Stainless Steel Spring
​​Certifications​​ ISO 5597:2017 (Hydraulic Cylinders), Cat 1U9861 Material Compliance

247-8888 Seal Kit Components & Functions

Main ​​Component​​ ​​Function​​
​​1. Main Rod Seal (Polyurethane)​​ Quadruple-lip design – resistant to dirt ingress and pressure spikes (tested for 10,000+ cycles).
​​2. Piston Seal (HNBR + PTFE)​​ Zero-leakage design for bidirectional pressure – tolerates 0.15mm cylinder wear.
​​3. Wear Band (PTFE Composite)​​ Low-friction backing – reduces scoring by 80% vs. standard nylon bands.
​​4. Wiper (Double-Lip NBR)​​ ISO 4406:2021 Class 14/-/12 certified – clears mud/debris without rod damage.
​​5. Buffer Rings (Nitrile)​​ Prevents extrusion at rod bends up to 3°.
​​6. O-Rings (FKM Static Seals)​​ Seals gland ports – compatible with Cat TDTO 10W-30 hydraulic oil.

As the professional excavator seal kit manufacturer, we support OEM / ODM, different materials may have different parameter differences. For specific requirements, please contact us

Key Features & Benefits

✅ ​​Exact OEM Replacement​​: Directly replaces Cat part numbers ​​247-8888​​, ​​226-0850​​, and ​​432-5052​​
✅ ​​Heavy-Duty Abrasion Resistance​​: PTFE wear bands endure 20,000+ scoop cycles in rocky terrain
✅ ​​Zero-Leak Piston Seals​​: Maintains bucket position under load without drift (ISO 10766-1 compliant)
✅ ​​Shock Load Protection​​: 35 MPa rating withstands impact loads from breaker attachments
✅ ​​Contaminant Defense​​: Wiper + rod seal + wear bands block 99.7% silt/sand ingress

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