RBB/HBY Buffer Seal for Hydraulic Cylinder
The RBB seal is a polyurethane U-shaped cup buffer seal that works in series with the main rod seal.
Composed of TPU sealing rings and thermoplastic POM support rings, it can resist peak pressure in hydraulic applications and provide additional safety for the entire system.
- Description
- Technical Information
- Specifications
- Recommended Products
Description
Structural Design:
The impact and surge pressure of RBB buffer hydraulic cylinder piston rod under heavy load
Separate high-temperature fluids to improve the service life of sealing components.
The flexible external static sealing lip and front notch ensure that pressure can return to the system side of the buffer and prevent pressure accumulation between the rod and the buffer seal.
Adjust fluid flow to provide smooth deceleration of the piston.
Helps to cool down, prevent overheating from transferring to the seals, and reduce the heat generated by the piston rod seals during operation.
Summary of Advantages:
- Excellent system protection at pressure peaks
- Enhance gap compression resistance
- Low static and dynamic friction
- High wear resistance
Typically made from polyurethane, alternative materials can be provided upon request to suit your specific needs.
Technical Information

Technical Parameters:
|
Pressure |
Up to 690bar |
|
Speed |
Up to 1m/s(3.2ft/s) |
|
Material |
U-1023 |
|
Temperature(°C) |
-60℃~120℃ |
Specifications
|
Designation |
Outer Diameter |
Inner Diameter |
Housing groove width |
|
RBB 40*55.5*6.3 |
40 |
55 |
6.3 |
|
RBB 45*60.5*6.3 |
45 |
60.5 |
6.3 |
|
RBB 50*65.5*6.3 |
50 |
65.5 |
6.3 |
|
RBB 55*70.5*6.3 |
55 |
70.5 |
6.3 |
|
RBB 60*75.5*6.3 |
60 |
75.5 |
6.3 |
|
RBB 65*80.5*6.3 |
65 |
80.5 |
6.3 |
|
RBB 70*85.5*6.3 |
70 |
85.5 |
6.3 |
|
RBB 75*90.5*6.3 |
75 |
90 |
6.3 |
|
RBB 80*95.5*6.3 |
80 |
95.5 |
6.3 |
|
RBB 85*100.5*6.3 |
85 |
100.5 |
6.3 |
|
RBB 90*105.5*6.3 |
90 |
105 |
6.3 |
|
RBB 95*110.5*6.3 |
95 |
110.5 |
6.3 |
|
RBB 100*115.5*6.3 |
100 |
115.5 |
6.3 |
|
RBB 105*120.5*6.3 |
105 |
120.5 |
6.3 |
|
RBB 110*125.5*6.3 |
110 |
125.5 |
6.3 |
|
RBB 115*130.5*6.3 |
115 |
130.5 |
6.3 |
|
RBB 120*135.5*6.3 |
120 |
135.5 |
6.3 |
|
RBB 125*140.5*6.3 |
125 |
140.5 |
6.3 |
|
RBB 130*145.5*6.3 |
130 |
145.5 |
6.3 |
|
RBB 140*155.5*6.3 |
140 |
155.5 |
6.3 |