O-Ring Groove Design Extrusion Limits

Extrusion Limits

Extrusion DiagramAn o-ring is contained in a gland and forced to flow into the surface imperfections of the glands and any clearance gaps available to it.

An o-ring can perform sealing by means of squeeze under low pressure conditions. The extent of extrusion depends upon the hardness of O-ring, the pressure, and the size of the clearance gap.

Extrusion Limits Chart

Extrusion Pressure Info

Hardness (Shore A)Pressure (PSI)
Below 500500 - 10001000 - 15001500 - 20002000 - 3000
700.0160.0100.0060.0040.002
900.0280.0240.0200.0160.010