Yes, they are pre-sealed at the factories but we recommend you seal it every 6 months. Don’t worry, sealing is very easy process; just spray the sealer on the top and wipe it with a cloth. Make sure to read the instructions on the bottle.
Yes, they are pre-sealed at the factories but we recommend you seal it every 6 months. Don’t worry, sealing is very easy process; just spray the sealer on the top and wipe it with a cloth. Make sure to read the instructions on the bottle.