Tap Washers Spacer Seal Black Polythene - 3/8", 1/2", 3/4", 1", 1 1/4", 1 1/2"
Oracstar Tap Washers - Black, Polythene - 3/8", 1/2", 3/4", 1", 1 1/4", 1 1/2". Material: Plastic, Polythene. These tap washers are commonly used as spacers to stop nuts from untightening or to spread the weight of a load out on a bolt.