R.Cones 27x18mm
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For use with Buchner Funnels as an alternative to boring a large hole in a rubber bung. Can be used as a seal between the filter flask and the Buchner Funnel. It is worth noting that the funnel stem will not form the seal, but the main body will - it does work! In packs of 10. Diameter: 27 x 18mm. Int. Large to small end.