Stainless Culture Jar Lid, Standard mouth - 5 pack

Our stainless steel culture jar lids for mushroom growing (mycology) are sanitary, rust free and will last you for years.  Save the time and hassle of having to drill holes in standard lids and then throwing them away after one use. Included Silicone gasket ensures a tight sanitary seal. Fits standard mason jars 26 gauge laser cut 304 stainless steel construction Includes high temperature silicone rubber gasket Each lid has one .25" port and one .28" port. Ports accommodate 1/4" injection stopper and adhesive filter paper or Omicron filter FREE SHIPPING ON THIS ITEM