NEW PIG CORP., 22 Diameter Universal Absorbent Drum Top Pad, Gray, 5/Box The NEW PIG CORP. NPG-25102 Universal Absorbent Drum Top Pad is designed to keep shop floors clean and safe by absorbing drips, leaks, and overfills around 55-gallon drums. These lightweight, gray pads are pre-cut for easy placement and help maintain a professional and hazard-free work environment. Each pad is constructed with eight layers of polypropylene.