Defining Factors in Sealing Applications

Seal Orientation and Type

seal orientation

Surface Finish

Pressure Energized Seals

Friction

Component Concentricity and Roundness

Seal Installation – Avoiding Damage

seal installation

Peripheral Compression

Percentage Gland Fill

Cross Section Size

Installed Seal Stretch and Cross-sectional Reduction

Seal Extrusion

Seal Extrusion

Anti-Extrusion (Back-up) Rings

Seal Groove Design Equations

  O-Ring Cross-sectional Area (in2) Quad-Ring® Brand Cross-sectional Area (in2)
Seal Cross-section Nominal (in2) Maximum Nominal Maximum
.070±.003 .00385 0.00419 0.00403 0.00438
.103 ±.003 .00833 0.00882 0.00872 0.00923
.139 ±.004 .01517 0.01606 0.01587 0.01680
.210 ±.005 .03464 0.03631 0.03623 0.03797
.275 ±.006 .05940 0.06202 0.06213 0.06487

Recommended Radial Sealing Clearances for Quad-Ring® Brand and O-Ring Seals