I have 2 5 Kg Rock Tumblers and 2 3Kg Rock Tumblers. I need to purchas extra lids for both. They have a rubber O ring on bottom of both the seals the lid to the drum. Are the Type A and Type B Polycarbonate lids useable for these Tumblers? Please let me know. On Amazon the Model numbers are Kg 6808 and Kg 20000