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The #12 Drilled Rubber Stopper (DRS) is a pure white gum laboratory stopper. The top diameter is 2.5625 , the bottom diameter is 2.125 , and it has a 3 8 hole drilled in the center, the perfect size for an airlock. The 12 rubber stopper is also available as a #12 Solid Rubber Stopper (SRS).
Our #12 Solid Rubber Stopper (SRS) is a pure white gum laboratory stopper. The top diameter is 2 9 16 and the bottom diameter is 2 1 8 , and it is solid. Perfect for use when fermentation is complete or to store a clean and dry fermenter. This #12 rubber stopper is also available…
Our #13 Drilled Rubber Stopper (DRS) is a pure white gum laboratory stopper. The top diameter is 2 11 16 , the bottom diameter is 2 5 16 , and it has a 3 8 hole drilled in the center, the perfect size for an airlock. This #13 rubber stopper also comes as a #13 Solid…
Our#13 Solid Rubber Stopper (SRS) is a pure white gum laboratory stopper. The top diameter is 2 11 16 and the bottom diameter is 2 5 16 . It is solid so it is perfect for stopping up a fermentor after fermentation has ceased or when you are storing a clean and dry fermenter. This…
Our #2 Drilled Rubber Stopper (DRS) has a top diameter of 13 16 , a bottom diameter of 5 8 , and it has a 3 8 hole drilled in the center, the perfect size for an airlock. This #2 rubber stopper fits standard beer bottles and wine bottles and is also available as a #2…
Our #2 Solid Rubber Stopper (SRS) is a solid pure white gum laboratory stopper. The top diameter is 13 16 and the bottom diameter is 5 8 . This stopper is solid and does not have a hole drilled in it. A perfect stopper to use if fermentation has ceased or you are storing your…
Our #3 Drilled Rubber Stopper (DRS) is a pure laboratory stopper. The top diameter measures 15 16 , the bottom diameter measures 3 4 , and has a 3 8 hole drilled in the center, the perfect size for an airlock. This #3 rubber stopper is also available as a #3 solid rubber stopper (srs).
Our #3 Solid Rubber Stopper (SRS) is a solid white gum stopper. The top diameter measures 15 16 and the bottom diameter measures 3 4 . The SRS stopper is solid and does not have a hole drilled in it. A perfect stopper to use if fermentation has ceased or you are storing your clean…
This #4 Solid Rubber Stopper (SRS) is a solid pure laboratory stopper. It has a top diameter of 1 and a bottom diameter of 13 16 . It is solid and does not have a hole drilled in it, so it is a perfect stopper to use if fermentation has ceased or you are storing your…
Our #5 Drilled Rubber Stopper (DRS) is a pure lab stopper and has a top diameter of 1 1 16 , a bottom diameter of 15 16 , and a 3 8 hole drilled in the center, perfect for an airlock. The #5 rubber stopper is also available as a #5 Solid Rubber Stopper (SRS).
This #5 Solid Rubber Stopper (SRS) is a solid pure white gum laboratory stopper. The top diameter is 1 1 16 and the bottom diameter is 15 16 . It is solid (no hole), a perfect stopper to use if your fermentation is complete or you are storing your clean and dried carboy. This #5 solid…
Our #5.5 Drilled Rubber Stopper (DRS) is a pure white gum laboratory stopper and has a top diameter of 1 1 8 , bottom diameter of 1 , and a 3 8 hole drilled in the middle, perfect for an airlock. This #5.5 drs is also available as a #5.5 solid rubber stopper (srs).
This #5.5 Solid Rubber Stopper (SRS) is a solid lab stopper. The top of the stopper s diameter is 1 1 8 and the bottom diameter is 1 . It does not have a hole drilled in it, the perfect stopper to use if fermentation has ceased or you are storing your clean and dried…
Our #6 Drilled Rubber Stopper (DRS) is a pure white gum laboratory stopper. It has a top diameter of 1 1 8 , a bottom diameter of 1 1 16 , and has a 3 8 hole drilled in the center, perfect for a 3-piece airlock or ripple airlock. Great for small mouth one gallon jugs. This #6 drilled rubber stopper…
Our #6 Solid Rubber Stopper (SRS) is a solid pure gum laboratory stopper. The top diameter of the stopper is 1 1 8 and the bottom diameter of the stopper is 1 1 16 . It does not have a hole, making it the perfect stopper to use if your fermentation has completed or you…
This #6.5 Drilled Rubber Stopper (DRS) has a top diameter of 1 3 8 , bottom diameter of 1 1 8 , and a 3 8 hole drilled in the center, perfect for an airlock. Our #6.5 rubber stopper fits most 3, 5, 6, and 6.5 gallon glass carboys and is also available as a #6.5 solid rubber…
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