Screw Cap w/ Hole - 38mm
Screw on to the gallon jar for perfect sealing and never pops ups.
Replaces the bung for a 1 Gallon Jar.
Cap with molded hole to accommodate either S-Shaped or Cylinder Airlocks.
VERY EASY TO CLEAN. BPA Free.
Maximum Temperature: 75 °C (167 °F).