CRONEX Close Couple Flange Kit. This Universal Kits Consists Of One Stainless Steel Close Couple Flange Plate With One Rubber Washer And Two Bolts. Flange Can Be Used To Cover Closed Coupled Pipes. The Rubber Washer Prevents The Pipe From Leaking And Provide Positive Shut Off, Stop Leaks To Save Energy. CPX5683 / CRX0009