LEE Sealed Hopper Lid For Auto Drum & Pro Auto Disk Powder Measure~AP1646

1: Uses a large 3/32 width 70 Durometer Hardness O-ring for a consistent seal around the hopper.  

2: This is a Multi infill print.  It's printed using 30% infill on main body plus a 100% torus infill for the O-ring location. As with all my designs, My goal is to provide you with parts that are going to last. 

 3: Large 2.687" x 0..500" Knurled top for easy gripping 

4: 0.125"  spanner through hole on the side should you ever need assistance in removing the lid.