RTumbler Brand Replacement Retainer Ring 3 Pack Compatible with Thumler's Tumblers 9 Lb A-R6 and A-R18

Thumlers-Tumblers-9-Lb-Retainer-Ring-For-A-R6-and-A-R18 3 Pack Has Greater Flexibility and Abrasion Resistance Than Natural Rubber These rings have a 15 Year Shelf Life! They Stay Pliable Down To -20 F