Hebei Jinwo Machinery Technology Co., Ltd. is one of the leading manufacturers and suppliers of u cup rod seal in China. With abundant experience, we warmly welcome you to buy bulk durable u cup rod seal in stock here from our factory. All customized products are with high quality and competitive price. Contact us for quotation.
The U Cup Rod Seal is a precision-engineered micro-sealing solution made from high-grade polyurethane. Designed for small-bore hydraulic cylinders, its asymmetrical profile ensures a leak-free interference fit. This compact seal provides exceptional wear resistance and low friction, maintaining system integrity in tight-space industrial applications.
Essential Fitment & Specs
|
Parameter |
Specifications |
|
Material |
High-Grade PU (Polyurethane) |
|
Inner Diameter (Rod) |
4mm |
|
Outer Diameter (Groove) |
10mm |
|
Height (Width) |
4mm |
|
Temp. |
-35°C to +100°C |
|
Work Pressure (Max. Pressure) |
≤ 40 MPa |
|
Run Speed (Max. Speed) |
≤ 0.5 m/s |
|
Media |
Mineral Oil-Based Hydraulic Fluids |
|
Structure Type |
Asymmetrical U-Cup Profile |
|
Application |
Small-Bore Precision Cylinders |
Structural Integration & Sealing Principle
This compact U Cup Rod Seal features an asymmetrical design specificallyengineered for rod seal types where space is limited.
The internal sealing lip is precision-molded to be longer and more flexible, ensuring constant contact within the cylinder rod seal assembly during reciprocation.
Under hydraulic load, the U-groove expands, utilizing system pressure to reinforce the rod seal hydraulic cylinder interface.
This self-energizing mechanism provides superior leakage control even in micro-hydraulic systems or a specialized pneumatic rod seal application with high-frequency movements.
Dynamic Performance & Wear Resistance
Manufactured from high-modulus polyurethane, this U Cup Rod Seal offers exceptional resistance to abrasion and tearing.
Unlike a standard ptfe rod seal, this PU version provides the necessary elasticity to maintain a "dry rod" effect in precision environments.
Its material properties ensure a low breakout force, preventing stick-slip and ensuring smooth motion in automated equipment.
The robust outer static lip provides excellent stability within the housing, preventing the cylinder rod seal from tilting or extruding under pressure pulses.
Why Choose Jinwo - Precision Integration for Hydraulic Systems
Jinwo specializes in the micro-molding of small-scale components, ensuring that every rod seal hydraulic cylinder part meets exact dimensional tolerances.
We offer various rod seal types, including specialized ptfe rod seal options and high-performance PU compounds that resist aging.
Each production batch undergoes rigorous inspections to guarantee zero-defect performance for our B2B partners.
By choosing Jinwo, you receive a precision-engineered pneumatic rod seal or hydraulic solution that maximizes the reliability of your smallest components.
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