* Compatible with HHRING, 151122 O-Ring, 152032, 4001756, 151122-03, Culligan OR-100, and many others.
* 139mm inside x 148 mm outside and 4.5mm thick. That is 5-1/2€ inside x 5-13/16€ outside and just under 3/16€ thick.
* O-Ring is Made of Buna-N Rubber the industry standard
* 2 Pack of O-Ring Seals