Product Description:

Overview

The YNF16738 bucket seal kit is engineered for the Caterpillar CAT 307 excavator and corresponds to OEM reference number 105-7253. This seal kit is designed to restore the performance of your excavator's bucket hydraulic cylinder, ensuring maximum sealing efficiency, extended service life, and resistance to high pressure and abrasion. It includes all the critical sealing components required for a full cylinder rebuild.

Machine Compatibility

• Model: CAT 307

• Cylinder Application: Bucket cylinder

• OEM Part Number: 105-7253

• 100% tested for compatibility and performance under OEM conditions.

What’s Included

The kit features a full assortment of high-performance seals made from robust, wear-resistant materials:

• Rod Seal – Ensures zero leakage along the rod.

• Piston Seal – Withstands high pressure, maintains tight seal.

• Dust Seal/Wiper Ring – Blocks external contaminants like dust, mud, and water.

• Buffer Seal – Protects primary seals from pressure spikes.

• Wear Ring – Guides piston/rod, prevents metal contact.

• O-Rings & Back-up Rings – Prevent extrusion and ensure sealing under load.

Key Advantages

• OEM Fit and Function: Matches original specs for hassle-free installation.

• Premium Materials: Made of PU, NBR, and PTFE; highly resistant to hydraulic oil, heat, and wear.

• Enhanced Durability: Withstands extreme working conditions and prolonged usage without degradation.

• Leak-Proof Assurance: Double-seal setup ensures zero internal/external leakage.

• Easy to Install: Perfect fit means no machining or modifications are needed.

Use Cases

• Bucket cylinder leakage repair

• Scheduled maintenance and rebuilds

• Workshop overhauls for construction fleets

• Field service for hydraulic cylinder failures

Technical Specifications:

Your Trusted Excavator Parts Supplier – Manufacturer & One-Stop Sourcing Solution

Looking for a reliable supplier of excavator parts? Whether you need OEM services or a complete range of parts, we provide the best solutions for your business. As both a manufacturer and trading company, we combine factory-direct prices with the convenience of one-stop sourcing, ensuring that you get high-quality parts at competitive prices.

At YNF Machinery, we specialize in excavator rubber parts and a wide range of excavator components. Our extensive experience and commitment to quality make us a trusted partner for distributors, wholesalers, and repair shops worldwide.

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✅ Largest Excavator Rubber Parts Factory in Southern China

Our factory is the biggest excavator rubber parts manufacturer in southern China. This means:
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✔ Looking for distributors and agents worldwide—let’s grow together!
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What Excavator Parts Do We Offer?

We cover all major excavator brands, including Caterpillar, Komatsu, Hitachi, Volvo, Kobelco, Doosan, Hyundai, JCB, Kubota, and more. Our product range is designed to keep your machines running efficiently and reduce downtime.