A triangular groove is used to seal covers and flanges using O-rings. The groove represents the installation space into which the sealing element is inserted during installation.
The triangular groove is a rare form of groove geometry. It is much more common for the installation space to be designed as a rectangular groove. With the rectangular groove, the O-ring is pressed between two sealing surfaces: The base of the groove and the surface of the cover.
An O-ring in a triangular groove, on the other hand, is in contact with all three surfaces of the triangle. This means that the elastic deformation of the O-ring required for the sealing effect cannot reach a defined value.
#1 Definition of triangular groove
The groove in triangular geometry (triangular groove) represents a special installation space for O-rings as a sealing element.
#2 Meaning of the triangular groove
The triangular groove is rarely used in sealing technology. Their use is not recommended due to the complex production of the groove and the small groove clearance, which hardly allows the sealing element to swell.