Oring Compression Calculator

Oring Compression Calculator FAQ

How do i use the o ring calculator?

Just select the seal and application type, input your bore, piston, and groove diameters, and the O-rings inside diameter (ID) and cross section (C/S). The O-ring calculator will show you the % compression, stretch, squeeze, extrusion gap and minimum groove width (with a 10% swell assumed).

How much compression do i need for my o rings?

The O-ring calculator will show you the % compression, stretch, squeeze, extrusion gap and minimum groove width (with a 10% swell assumed). The recommended % compression is 10-40% (static), 10-30% (dynamic) and the % stretch is 1-5% (when stretch is required).

How do you calculate o ring compression and gland width?

All three compression values must fall between 5%-30% squeeze. The gland retaining the o-ring has a rectangular area. Once the o-ring cross-section is selected and the gland height is calculated (to achieve the desired squeeze to the o-ring), the final calculation will be the gland width.

How do i use the o ring compression chart?

To use the chart, first determine the o-ring diameter, material hardness, then your design compression on the o-ring. With this you can determine the estimated compression force per linear inch of your installed o-ring.