THREE HOLE STOPPER #8 Drilled With Three 3/8 in Holes – Direct Replacement For Grainfather GCA Glycol Chiller Adaptor

Here’s a hard to find ~#8 3-Hole rubber stopper for fitting and airlock AND a thermometer chiller coil or other devices.  This stopper is the factory replacement for the one on a Grainfather GCA.   Use this in any configuration you can think of,  Airlocks, Thermowells, Racking Canes, or Aquarium pump powered filter arrangements and many others.