Hebei Jinwo Machinery Technology Co., Ltd. is one of the leading manufacturers and suppliers of hby high pressure polyurethane buffer seal for hydraulic cylinders in China. With abundant experience, we warmly welcome you to buy bulk durable hby high pressure polyurethane buffer seal for hydraulic cylinders in stock here from our factory. All customized products are with high quality and competitive price. Contact us for quotation.
Technical Specifications Table
|
Parameter |
Specifications |
|
Material |
Polyurethane (PU) + NBR Energizer |
| Size | Customized / Standard Hydraulic Sizes |
|
Temp. |
-30°C to +100°C |
|
Max. Pressure |
40 MPa |
|
Fluid Media |
Hydraulic oils, mineral oils |
|
Media |
Petroleum based hydraulic fluid |
|
Type |
HBY Buffer Seal |
|
Backup Ring |
Included / Integrated O-ring |
|
Hardness |
93 Shore A |
Features & Benefits

✅ Superior Sealing Performance: The HBY High Pressure Polyurethane Buffer Seal is engineered to excel in demanding hydraulic applications. Its specialized design effectively manages pressure fluctuations, ensuring optimal system stability and preventing leakage in high-stress environments.
✅ Premium Polyurethane Material: Crafted from advanced, high-hardness polyurethane, this buffer seal offers exceptional wear resistance and durability. The robust material composition maintains structural integrity under extreme operating conditions, significantly extending the service life of your hydraulic components.
✅ Enhanced Pressure Management: Specifically optimized for high-pressure systems, the HBY seal acts as a critical buffer, shielding main rod seals from pressure spikes. This proactive protection minimizes seal fatigue and enhances the overall reliability of heavy-duty machinery.
✅ Precise Engineering Design: Our HBY series features a precision-molded profile that ensures a tight, reliable fit within the cylinder gland. This dimensional accuracy facilitates easy installation and consistent performance across diverse industrial, construction, and agricultural equipment applications.
✅ Global Compatibility Standards: Engineered as a high-quality aftermarket solution, these buffer seals are fully compatible with major global machinery brands. Trust Jinwo for reliable, OE-compliant sealing components that keep your heavy-duty hydraulic systems running efficiently and minimizing critical downtime.
Compatibility & Procurement

🔧 Machinery Compatibility: Fully engineered to fit major global brands including Caterpillar, JCB, and Volvo hydraulic systems seamlessly.
📦 Wholesale Procurement: Strict B2B tiered minimum order quantity policies designed exclusively to accommodate wholesale clients and screen out retail buyers.
🌍 Global Applications: Trusted replacement sealing solution tailored for heavy-duty construction machinery, agricultural equipment, and industrial trucks.
💼 Professional Supply: Backed by Jinwo manufacturing expertise, offering reliable industrial sealing solutions for technical department leads and procurement managers.
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