... mainly applied to 18 liters, 20 liters standard barrel (drum cover diameter is about 300mm). Manual Gland clampMain FeatureIt ... used for sealing open barrels, paint barrels, oil barrels, paint drum, paint bucket of 4 liters, 5 liters, 10 liters, 12 liters, 18 ... mainly applied to 18 liters, 20 liters standard barrel (drum cover diameter is about 300mm). Technical parametersModelAL-SP300Cover diameter300 ...