o-ring types

So far on this blog we’ve discussed O-Ring sizes, the materials they’re made from, and the ways in which they can be used.

In this post, we’ll talk about the common types of O-Ring applications, and their impact on O-ring sizing and hardware design.

1. Static Axial Seals

When designing grooves for static axial seals, the first consideration is whether the pressure is coming from inward or outward.

In situations involving outward pressure, the outside diameter of the groove is primary, and the groove width is the primary consideration for the inside diameter. For inward pressure, the inside diameter is primary. This ensures that the O-Ring needs to move the least distance to seal the extrusion gap.