33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]

Product Overview
This premium repair seal kit is engineered for Bonfiglioli BL577 hydraulic components. It includes all essential shaft seals, O-rings, gaskets and backup rings for full component overhaul.
Made of imported high-quality NBR and FKM fluororubber, the kit features excellent oil resistance, temperature resistance and wear resistance. It perfectly replaces original Bonfiglioli seals, solves common problems such as oil leakage and pressure loss, and prolongs component service life under long-term heavy-duty operation.
Product Specifications
Item |
Detailed Parameter |
Product Name |
Bonfiglioli BL577 Hydraulic Component Seal Kit |
Applicable Model |
BL577 |
Compatible Series |
Bonfiglioli BL Series Hydraulic Components |
Main Material |
Imported NBR / FKM Fluororubber + Reinforced Backup Ring |
Max Working Pressure |
35MPa |
Working Temperature |
-30°C ~ 120°C |
Kit Contents |
Shaft seal, O-rings, gaskets, backup rings, full overhaul parts |
Cross Reference OEM No. |
BL577-SEAL, 775012 |
Net Weight |
Approximately 1.0kg |
Applicable System |
Hydraulic transmission & power control systems |
Warranty |
12 Months |
Key Selling Points
1. 100% Exact OEM Replacement.Fully compatible with original Bonfiglioli BL577 hydraulic components. Matches OEM part numbers BL577-SEAL and 775012. No modification required for direct installation.
2. Premium Imported Sealing Material.Core sealing parts adopt high-performance FKM rubber and reinforced backup rings. The material is oil-proof, corrosion-resistant and aging-resistant, working stably in temperatures from -30°C to 120°C.
3. Zero Leakage & High Pressure Durability.All components are strictly tested under 35MPa high pressure. It eliminates internal and external oil leakage, maintaining stable hydraulic pressure and consistent machine power output.
4. Complete All-in-One Repair Kit.Covers all sealing accessories needed for full component maintenance. Complete parts reduce repair time and lower equipment operation costs.
5. Strict Factory Quality Control.Every seal kit passes air tightness, high pressure and aging tests before delivery. It meets OEM standards and ensures reliable long-term industrial performance.
6. Application Scope.Suitable for Bonfiglioli BL577 hydraulic components on various heavy-duty equipment:
• Concrete mixer trucks
• Road rollers and asphalt pavers
• Excavators and loaders
• Mining machinery
• Industrial hydraulic power units
• Hydraulic transmission systems
• Heavy-duty mobile machinery
Copyright © Nanjing Hovoo Machinery Technology Co., Ltd All Rights Reserved