Excavator Oil Seal R290‑9 R300‑9 R305‑9 Bucket Cylinder Seal Kit 31Y1‑30290

Keywords: 31Y1‑30290, Bucket Cylinder Seal Kit, Hydraulic Oil Seal Repair Kit, Hyundai excavator seal parts, R290‑9 bucket cylinder seal, R300‑9 hydraulic seal kit, R305‑9 bucket overhaul seal, Excavator hydraulic sealing spare parts

🔹Product Overview

This hydraulic bucket cylinder seal repair kit, part number 31Y1‑30290, is a complete sealing maintenance set specially made for Hyundai excavator R290‑9, R300‑9, R305‑9 bucket (dipper‑end) cylinder. It contains piston seals, rod seals, wear rings, dust wiper seals, O‑rings and all supporting gaskets required to fully rebuild the bucket hydraulic cylinder. Made of premium oil‑resistant PU, NBR and PTFE composite materials, our seal kit features excellent high‑pressure resistance, wear‑resistance and high‑temperature stability. It is an ideal aftermarket replacement part for fixing bucket cylinder oil leakage, pressure loss, slow bucket action and drifting faults.

🔹Detailed Specifications

🔹Key Features & Advantages

✅ Full‑set Complete Sealing Components Every kit includes all sealing parts needed for one bucket cylinder overhaul, no missing accessories, one‑stop repair solution.

✅ Exact OEM Size & Groove Matching Manufactured strictly following the original cylinder specification, perfect fit for cylinder rod and seal grooves, no cutting or modification needed during installation.

✅ High‑Grade Sealing Raw‑Material Adopts premium PU, NBR and PTFE materials, outstanding hydraulic oil corrosion‑resistant performance.

✅ Heavy‑Duty High‑Pressure & Temperature Resistance Stable sealing performance under long‑time high‑pressure, heavy‑load and high‑temperature working environment of construction sites.

✅ Powerful Anti‑Leakage Performance Effectively solve external oil seepage, internal leakage, bucket dropping and insufficient cylinder power problems.

✅ Excellent Wear‑Resistant & Long Service Life Low‑friction sealing surface, reduce abrasion between seals and cylinder rod, greatly extend the service cycle of hydraulic cylinder.

✅ 100% Completeness Inspection Before Shipment Each seal kit is carefully checked part‑by‑part before delivery to ensure zero shortage.

🔹Application Scope

Compatible with Hyundai excavator models for bucket cylinder maintenance: ‑ R290‑9 ‑ R300‑9 ‑ R305‑9 Suitable for hydraulic cylinder overhaul, leakage troubleshooting and routine maintenance work.

🔹Our Company Advantage

We are a professional supplier of full‑range excavator spare parts. We supply boom, arm and bucket cylinder seal kits, hydraulic pumps, hydraulic cylinders, engine spare parts and undercarriage components for Hyundai, Sany, Komatsu, Cater-pillar,  and other well‑known excavator brands. ‑ Large‑scale inventory of Hyundai excavator hydraulic seal kits ‑ Factory‑direct competitive wholesale price ‑ Fast shipment for in‑stock goods ‑ Support mixed‑order & one‑stop spare‑parts procurement ‑ Professional part‑number matching technical support service

🔹Packaging & Shipping ‑

Independent sealed plastic bag + shock‑proof inner box for seal kit ‑ Outer reinforced hard carton for long‑distance sea‑transport protection ‑ Multiple shipping solutions: sea freight, air freight, express courier for small trial orders ‑ Export documents (Commercial Invoice, Packing List) can be provided.

🔹Contact Us

If you need more boom, arm, bucket cylinder seal kits or overhaul spare‑parts for Hyundai R‑series excavators, please send your parts list to us. We will send you our best quotation promptly.