Product Description
An excellent grade of rubber. Low sulfur content. Size numbers are molded into the top. Each piece has one hole at the center with diameter of approximately 3mm.
Measurements:
Top Diameter(mm) x Bottom Diameter(mm) x Length(mm).
Note that each size has different pack quantity.
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Customer Service regarding a previous order for two-hole rubber stoppers (no. 3 size).
The stoppers shipped to me the first time were gummy and broke apart when I attempted to use them. I received a call from customer service followed by a new shipment of stoppers that were NOT defective. Thank you very much!
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Just the job!
Perfect - which is a word that we homebrewers do not often say, but this stopper is exactly what I needed to set up a controlled racking system that will be (almost) oxygen free.