This calculator allows you to find the recommended O-Ring inner diameter and range of cross section diameters that will fit a given gland size and tolerance range in a radial seal.
Inputs
Equations Behind the Calculator
This calculator implements the following two equations to determine the bounds on the cross-section diameter CS,
The recommended tolerance is based on the cross-section diameter, and is found from the following table:
Cross Section Diameter (inch)
Recommended Tolerance (inch)
CS < 0.104
0.003
0.104 < CS < 0.139
0.004
0.139 < CS < 0.210
0.005
0.210 < CS < 0.275
0.006
0.275 < CS
0.008
The recommended inner diameter is found by stretching the O-Ring circumference by 2% over the minimum Groove Diameter,
