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Installation of O-rings

Recommendations for the installation of O-rings

Radial installation

Axial installation

Recommendations

Radial section 
diameter d2 (torus)Radial installationAxial installationRadius***
Depth of the housingWidth of the housingDepth of the housingWidth of the housing 
Dynamic t1 +0,05Static t +0,05b1 +0,2h +0,05b4 +0,2r1 ±0,2
0,50–0,350,800,350,800,20
0,74–0,501,000,501,000,20
1,00–0,701,400,701,400,20
1,02–0,701,400,701,400,20
1,20–0,851,700,851,700,20
1,25–0,901,700,901,800,20
1,27–0,901,700,901,800,20
1,30–0,951,800,951,800,20
1,42–1,051,901,052,000,30
1,501,251,102,001,102,100,30
1,521,251,102,001,102,100,30
1,601,301,202,101,202,200,30
1,631,301,202,101,202,200,30
1,781,451,302,401,302,600,30
1,801,451,302,401,302,600,30
1,831,501,352,501,352,600,30
1,901,551,402,601,402,700,30
1,981,651,502,701,502,800,30
2,001,651,502,701,502,800,30
2,081,751,552,801,552,900,30
2,101,751,552,801,552,900,30
2,201,851,603,001,603,000,30
2,261,901,703,001,703,100,30
2,301,951,753,101,753,100,30
2,341,951,753,101,753,100,30
2,402,051,803,201,803,300,30
2,462,101,853,301,853,400,30
2,502,151,903,301,853,400,30
2,622,252,003,602,003,800,30
2,652,252,003,602,003,800,30
2,702,302,053,602,053,800,30
2,802,402,103,702,103,900,60
2,922,502,203,902,204,000,60
2,952,502,203,902,204,000,60
3,002,602,304,002,304,000,60
3,102,702,404,102,404,100,60
3,503,052,654,602,654,700,60
3,533,102,704,802,705,000,60
3,553,102,704,802,705,000,60
3,603,152,804,802,805,100,60
4,003,503,105,203,105,300,60
4,504,003,505,803,505,900,60
5,004,404,006,604,006,700,60
5,304,704,307,104,307,300,60
5,334,704,307,104,307,300,60
5,504,804,507,104,507,300,60
5,705,004,607,204,607,400,60
6,005,304,907,404,907,600,60
6,505,705,408,005,408,201,00
6,996,105,809,505,809,701,00
7,006,105,809,505,809,701,00
7,506,606,309,706,309,901,00
8,007,106,709,806,7010,001,00
8,407,507,1010,007,1010,301,00
9,008,107,1010,607,1010,901,50
9,508,608,2011,008,2011,401,50
10,009,108,6011,608,6012,002,00
12,0011,0010,6013,5010,6014,002,00

Radial installation (static and dynamic)

Internal sealing

The size of the O-ring will be selected so that the internal diameter d1 has the least possible deviation with respect to the diameter of the sealing d5.

External sealing

The size of the O-ring will be selected so that the internal diameter d1 is less than or equal to the housing diameter d3.

Axial installation (static)

The direction of the service pressure needs to be taken into account when choosing the size of the O-ring for a static axial installation. If the service pressure is internal, the external diameter of the O-ring must be 1% to 2% bigger than the external diameter of the housing d7. If the service pressure is external, the O-ring should have a diameter of between 1% and 3% smaller than the internal diameter of the housing d8.