Drum Cap Sheets - 2 Mil

2 Mil Drum Cap Sheets come perforated on a roll for easy dispensing. After you've inserted a drum liner, completely seal off contents with a plastic polyethylene cap sheet. This keeps contents from coming in contact with the metal lid, preventing contamination. For 55 gallon drums, the 30" x 30" cap sheet is a perfect fit; for more over-hang, use the 34" x 34" perforated cap sheets.