O-ring Groove sizes

Hydraulics - Dynamic application

    Table Example
    






    
  
        d2
        t
        b
        z
    

        1.00
        0.90
        1.30
        1.00
    

        1.50
        1.30
        1.90
        1.00
    

        1.60
        1.40
        2.00
        1.10
    

        1.78
        1.50
        2.30
        1.10
    

        1.90
        1.60
        2.40
        1.20
    

        2.00
        1.70
        2.40
        1.20
    

        2.40
        2.10
        2.90
        1.40
    

        2.50
        2.20
        3.00
        1.40
    

        2.62
        2.30
        3.10
        1.50
    

        2.70
        2.40
        3.20
        1.50
    

        3.00
        2.60
        3.60
        1.60
    

        3.50
        3.10
        4.20
        1.80
    

        3.53
        3.10
        4.20
        1.80
    

        3.60
        3.20
        4.30
        1.80
    

        4.00
        3.50
        4.80
        2.00
    

        4.50
        4.00
        5.40
        2.30
    

    Table Example
    






    
  
        d2
        t
        b
        z
    

        5.00
        4.45
        4.70
        2.50
    

        5.33
        4.70
        6.00
        2.70
    

        5.50
        4.95
        6.60
        2.80
    

        5.70
        5.10
        6.90
        3.00
    

        6.00
        5.40
        7.20
        3.10
    

        6.50
        5.80
        7.80
        3.30
    

        6.99
        6.30
        8.40
        3.60
    

        7.00
        6.30
        8.40
        3.60
    

        7.50
        6.70
        9.00
        3.80
    

        8.00
        7.20
        9.60
        4.00
    

        8.40
        7.60
        10.10
        4.20
    

        8.50
        7.70
        10.20
        4.20
    

        9.00
        8.20
        10.80
        4.30
    

        9.50
        8.60
        11.40
        4.40
    

        10.00
        9.10
        12.00
        4.50
    

When a backup is required the width of “b” is increased by the width of the back-up ring. If a backup ring is required on both sides of the O-ring then the width of “b” is increased by double the width of the back-up ring.

Pneumatics - Dynamic application

    Table Example
    






    
  
        d2
        t
        b
        z
    

        1.00
        0.95
        1.30
        1.00
    

        1.50
        1.35
        1.90
        1.00
    

        1.60
        1.45
        2.00
        1.10
    

        1.78
        1.55
        2.30
        1.10
    

        1.90
        1.75
        2.40
        1.20
    

        2.00
        1.80
        2.40
        1.20
    

        2.40
        2.15
        2.90
        1.40
    

        2.50
        2.25
        3.00
        1.40
    

        2.62
        2.35
        3.10
        1.50
    

        2.70
        2.45
        3.20
        1.50
    

        3.00
        2.75
        3.60
        1.60
    

        3.50
        3.25
        4.20
        1.80
    

        3.53
        3.25
        4.20
        1.80
    

        3.60
        3.35
        4.30
        1.80
    

        4.00
        3.70
        4.80
        2.00
    

        4.50
        4.20
        5.40
        2.30
    

    Table Example
    






    
  
        d2
        t
        b
        z
    

        5.00
        4.65
        6.00
        2.50
    

        5.33
        4.95
        6.40
        2.70
    

        5.50
        5.15
        6.60
        2.80
    

        5.70
        5.35
        6.90
        3.00
    

        6.00
        5.65
        7.20
        3.10
    

        6.50
        6.10
        7.80
        3.30
    

        6.99
        6.60
        8.40
        3.60
    

        7.00
        6.60
        8.40
        3.60
    

        7.50
        7.10
        9.00
        3.80
    

        8.00
        7.60
        9.60
        4.00
    

        8.40
        7.90
        10.10
        4.20
    

        8.50
        8.00
        10.20
        4.20
    

        9.00
        8.50
        10.80
        4.30
    

        9.50
        9.00
        11.40
        4.40
    

        10.00
        9.50
        12.00
        4.50
    

When a backup is required the width of “b” is increased by the width of the back-up ring. If a backup ring is required on both sides of the O-ring then the width of “b” is increased by double the width of the back-up ring.

Static application

Measurement “b” which is the width of the O-ring groove, must be larger than the deformed O-ring. However, the pressure applied to the medium to be sealed must have full access to the O-ring. The surface of the groove and the opposed surfaces should have rounded processing traces to permit peak-to-valley-heights of 44 - 25µm

    Table Example
    
        d2
        t
        b
   
        1.00
        0.80
        1.30
    
        1.50
        1.10
        1.90
       
        1.60
        1.20
        2.10
       
        1.78
        1.30
        2.30
       
        1.90
        1.40
        2.40
       
        2.00
        1.50
        2.60
       
        2.40
        1.80
        3.10
        
        2.50
        1.90
        3.20
       
        2.62
        2.00
        3.40
        
        2.70
        2.10
        3.50
        
        3.00
        2.30
        3.90
        
        3.50
        2.70
        4.50
        
        3.53
        2.70
        4.50
        
        3.60
        2.80
        4.70
        
        4.00
        3.15
        5.20
        
        4.50
        3.60
        5.80

    Table Example
    
        d2
        t
        b
        
        5.00
        4.00
        6.50
        
        5.33
        4.30
        6.90
        
        5.50
        4.50
        6.90
        
        5.70
        4.65
        7.40
        
        6.00
        4.95
        7.80
        
        6.50
        5.40
        8.40
        
        6.99
        5.85
        9.10
        
        7.00
        5.85
        9.10
        
        7.50
        6.30
        9.70
        
        8.00
        6.75
        10.40
        
        8.40
        7.15
        10.90
        
        8.50
        7.25
        11.00
        
        9.00
        7.70
        11.70
        
        9.50
        8.20
        12.30
        
        10.00
        8.65
        13.00

When a backup is required the width of “b” is increased by the width of the back-up ring. If a backup ring is required on both sides of the O-ring then the width of “b” is increased by double the width of the back-up ring.