HBY buffer ring is made up of high performance 93 shore A PU and POM support ring. It is used as a primary sealing element in hydraulic cylinders. Therefore, it should be absolutely used in combination with another sealing element.  It has got a structure providing solutions to many problems in hydraulic cylinders such as shock pressure, back pressure etc. 

Technical Data    
Pressure:  400 Bar    
Temperature: -35  to +100     
Speed: 0.5m/s     
Media: Hydraulic oils (mineral oil-based)     
    
Material    
Material: PU   Back-up ring: POM       
Hardness: 93 2 Shore A     
Color: Light yellow   Back-up ring: Black      
    
Advantages    
Unusually high wear resistance    
Insensibility yagainst shock loads and pressure peaks    
Low compression set    
Increased sealing performance at zero pressure    
Easy installation    
    
    
   
HBY

ID x OD x H (mm)
40x55.6x6
45x60.5x6
50x65.5x6
55x70.5x6
60x75.5x6
63x78.5x6
65x80.5x6
70x85.5x6
75x90.5x6
80x95.5x6
85x100.5x6
90x105.5x6
95x110.5x6
100x115.5x6
105x120.5x6
110x125.5x6
115x130.5x6
120x135.5x6
125x140.5x6
130x145.5x6
135x150.5x6
140x155.5x6
145x160.5x6
150x165.5x6
155x170.5x6