- 7/32" Internal Diameter
- 7/16" Outer Diameter
O-rings are used as “lock washers” for your hardware connections. You place them between the two parts to be joined and they compress to provide some tension on the hardware to help keep it from backing out. They also help cushion the joint and prevent stress from transferring from one part to the next. These o-rings are U.S. made and are extremely affordable.