Silicone Rubber X Shaped Ring Seal Quad Ring

A variation of the standard O-ring, quad ring seals have an X-shaped cross section.Quad rings nearly have the same sealing principle as the O-ring sealing. However, they provide less friction than the conventional O-ring and there is no spiral twist. It eliminates the tendency to roll in the groove. The sealing is achieved by the diametrical squeeze in a right angled groove. The system pressure creates a positive sealing force.

The size of x-ring seal is determined by the inner diameter ID and the wire diameter CS. Quad-ring size calculation:
outer diameter = inner diameter + 2 x wire diameter (OD = ID + 2x CS).