High Quality Boom Cylinder seal Kits 4448398 4448399 44448400 For ZX220

Brief Description:

Trade Terms:

About Us

We specialized in:

couplings, rubber mounts, gear parts , hydraulic seals and seal kits for hydraulic hammers, rock breakers, hydraulic excavators, wheel loaders, and backhoe loaders.

And, Our Company also supply:

Engine Parts, hydraulic piston pump and hydraulic travel motor, Swing motor assembly and hydraulic component parts, electric parts, etc. Hydraulic hammer breaker parts with piston, cylinder, chisel, through bolt, side bolt, top bush, front head bushing, accumulator, valve, etc.

Excavator seal kits information:

Safety guidelines to follow when repairing excavator seal kits

Working with excavator seal kits is essential to the proper operation of excavators. When performing repairs, it is important to adhere to all safety guidelines as set forth in the applicable manufacturer's manual. This includes, but is not limited to, wearing protective clothing, using the correct tools and equipment, following the instructions for the repair, and being aware of the potential hazards associated with the repair.

Utilize appropriate tools and techniques when repairing the seal kit

Executing the repair of an excavator seal kit requires the use of the appropriate tools and techniques. Utilizing the wrong tools or techniques may result in the failure of the repair. Any repair should be completed following the manufacturer’s instructions, as well as any safety warnings and precautions outlined in the manual. It is also important to take the time to inspect all parts and components of the seal kit thoroughly before beginning the repair. This will ensure that the necessary parts and components are available, and that the seal kit is in good working condition before commencing the repair process.

Products Show:

FAQ:

1. Are you manufacturer or trading company? If yes, in which city?

We are professional trading company, as well as manufacture. we have own factories.

We are able to mix different kinds of products(from different factories) together in one order. This will help clients save cost
on purchase.

2. Can I visit the factories ?

We warmly welcome customers visit us and the factories. Before you come here, please kindly tell me your schedule, we can
arrange for you. Our location in Guangzhou City, Guangdong province.

3. Can you provide me your catalogue?

Sure! Please contact us for catalogues.

4. How to do if I can't reach your minimum order quantity? What's your delivery time and payment terms?

Do not worry about that. If you can't reach MOQ for each item, we suggest you refer to our goods in stock and group sourcing
items. We also can send you the latest list of the prompt goods for your reference.These are also our hot selling items. You can
get them in lower price and smaller quantity.

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.

Why Choose YNF Machinery?

We are not just another supplier—we are your long-term partner for excavator parts. Here’s why businesses worldwide choose us:

✅ Largest Excavator Rubber Parts Factory in Southern China

Our factory is the biggest excavator rubber parts manufacturer in southern China. This means:
✔ Lower production costs, allowing you to increase your profit margins
✔ Reliable and stable supply, ensuring you get the parts you need, when you need them
✔ Consistent quality control, reducing the risk of defective products

✅ Thousands of Products & Multiple Quality Levels

We offer a comprehensive range of excavator parts, covering various brands and models.
✔ Choose from thousands of product lines
✔ Select from different quality levels to suit your market demands
✔ Always find the right part, reducing time spent searching for suppliers

✅ Expanding Global Network – 16+ Agents in China & Growing

We have over 16 agents across China and are actively expanding our global presence.
✔ Looking for distributors and agents worldwide—let’s grow together!
✔ Support with marketing, logistics, and product knowledge
✔ Long-term partnership opportunities with exclusive benefits

✅ 30+ Years of Industry Expertise

With decades of experience, we understand the excavator parts market inside out.
✔ Established reputation for reliability and professionalism
✔ Knowledgeable team to help you find the right parts quickly
✔ Expertise in OEM manufacturing, making custom parts to your specifications

✅ OEM Services & Customization

Looking to develop your own brand or need custom parts? We’ve got you covered!
✔ Our own factory can manufacture parts based on your designs and specifications
✔ We provide custom branding options to help you build your business
✔ From rubber parts to metal components, we can customize everything you need

✅ Office & Showroom in Guangzhou – Convenient Logistics

Our Guangzhou office and showroom allow for easy business meetings and fast shipping.
✔ View and inspect products before ordering
✔ Quick access to major ports for efficient global shipping
✔ Dedicated customer support team to assist with orders and inquiries

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.