The OK profile is a bi-directional piston seal designed for heary duty hydraulic application.      

Technical Data   
Pressure:  500 bar   
Temperature: -30  to +110   
Speed: 1 m/s    
Media: Hydraulic oils (mineral oil-based)    
Material: NBR70/POM   
Color: Black   
Low friction, high efficiency   
Superior sealing effect in high pressure.   
Easy onto a solid piston without tools   

ID x OD x H (mm) ID x OD x H (mm)
20x14x8 125x113x14
22x16x8 130x114x18
25x19x8 130x118x14
28x22x8 135x119x18
30x22x10 140x124x18
32x24x10 140x128x14
35x27x10 145x129x18
36x28x10 145x133x14
40x32x10 150x134x18
45x37x10 150x138x14
50x42x10 155x139x18
55x43x14 160x144x18
55x47x10 160x148x14
56x44x14 165x149x18
56x48x14 170x154x18
60x48x14 180x164x18
63x51x14 190x174x18
65x53x14 200x184x12
70x58x14 200x184x18
75x63x14 210x194x18
80x68x14 220x204x18
85x73x14 242x217x15.5
90x78x14 250x234x18
95x83x14 270x254x18
100x85x9.5 280x264x18
100x88x14 300x284x18
105x89x18 320x296x24
105x93x14 330x306x24
110x90x16 340x316x24
110x94x18 350x326x24
110x98x14 360x336x24
115x99x18 370x346x24
115x103x14 380x356x24
120x104x18 400x376x24
120x108x14 420x396x24