Spiral joints WRI

With outer and inner ring for a calibrated compression for use in almost all sizes of flanges ansi unions.
The “WRI” style are together with an outer ring that serves as a centering guide and an inner ring which fills the gap in the flange to prevent fluid from entering this gap. The outer ring converts the pair of flange faces into a grooved flange, providing all the safety in a joint without having to machine the joint and increase the cost.
Recommended for vacuum service. The outer ring is made of cold rolled steel and the inner ring is made of type 304 stainless steel, both with 1/8 “thickness. Other types of alloys are available for the inner ring.