SealSpec / Groove calculator
O-ring groove calculator
Nominal squeeze, stretch and gland fill for a rectangular groove. Start from a standard size or enter any ring.
Squeeze = (CS − depth)/CS · Stretch = (installed ID − ring ID)/ring ID · Fill = (π·CS²/4)/(depth·width). Tolerance stack, thermal expansion, swell and extrusion gap are not modelled; confirm against your seal supplier's design guide.
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