Stoppers and Bungs

#2  20mm x 16mm#3 15/16" x 3/4" #5.5 28mm x 24mm  #6 32mm x 26mm #6.5 34mm x 27mm  Suggested for glass carboys #7 37mm x 30mm #7.5 1.5" x 1.25" #8 ...

Universal stoppers cover several standard stopper sizes, due to their tapered shape.  The stoppers also feature a lip, to help prevent them from ge...

These foam stoppers are perfect for sealing off the top of your Erlenmeyer Flask. They are sized 35-45mm.