High-quality excavator arm cylinder seal kit ensures leak-proof performance and extended hydraulic system service life.
The YNF18211 31Y1-30111 arm cylinder seal kit has been specifically designed for the Hyundai R290-9 excavator, targeting the repair and maintenance of the middle boom (arm) hydraulic cylinder. This seal kit plays a critical role in maintaining hydraulic pressure, preventing oil leakage, and ensuring smooth cylinder operation during excavation tasks.
All sealing components have been manufactured using high-grade materials with excellent resistance to oil, temperature, and wear. The kit typically includes piston seals, rod seals, O-rings, dust seals, and backup rings, ensuring a complete solution for cylinder overhaul.
For B2B buyers such as distributors, repair workshops, and equipment owners, this excavator cylinder seal kit is an essential consumable product with consistent demand. It helps reduce machine downtime, extend cylinder service life, and improve overall equipment efficiency.
With OEM-level compatibility, the seal kit can be installed directly without modification, making it highly suitable for bulk stocking and fast-moving inventory. YNF Machinery ensures stable quality, reliable supply, and competitive pricing to support your business growth.
| Item | Specification |
|---|---|
| Product Name | Arm Cylinder Seal Kit |
| Part Number | 31Y1-30111 |
| YNF Number | YNF18211 |
| Applicable Model | Hyundai R290-9 |
| Application | Excavator arm (middle boom) cylinder |
| Type | Hydraulic Cylinder Seal Kit |
| Material | NBR, PU, PTFE, Rubber |
| Function | Sealing, oil leakage prevention |
| Installation Position | Arm cylinder |
| Brand | YNF |
| Origin | China |
| MOQ | 1 set |
| Packaging | Standard export packaging |
| Shipping Method | Air / Sea / Express |
| Payment Terms | T/T, L/C, PayPal |
| Application | Description |
|---|---|
| Excavators | Arm cylinder sealing and repair |
| Construction Machinery | Hydraulic cylinder maintenance |
| Mining Equipment | Heavy-duty hydraulic sealing |
| Repair Workshops | Cylinder overhaul and servicing |
| Spare Parts Distribution | Fast-moving maintenance parts |
Q: What is included in a seal kit?
A: It usually includes piston seals, rod seals, O-rings, dust seals, and backup rings.
Q: How often should seal kits be replaced?
A: It depends on working conditions, but regular inspection is recommended to prevent failure.
Q: Is this suitable for wholesale?
A: Yes, it is a high-demand consumable part ideal for distributors and workshops.
YNF Machinery supplies high-quality excavator cylinder seal kits like YNF18211, designed to meet the needs of professional B2B buyers. Each kit is manufactured under strict quality control to ensure reliable sealing performance and long service life.
This product helps reduce hydraulic oil leakage, improve machine efficiency, and lower maintenance costs for your customers. With competitive pricing, stable supply, and professional support, YNF Machinery helps you expand your parts business and increase profitability. Send your inquiry today to get a fast quotation.
