Order a set of 3 seals and save $10.
When ordering a set of 3, we will automatically provide sizes to compliment your kit or tube order for a complete set. Please leave a note at checkout if you want different sizes.
Select a seal based on your girth (circumference) measurement from the chart below. The seal should be sized based on the erect circumference of your shaft just below the head.
Choosing the proper size seal for your measurement will provide the best results in operation. In general, two sizes are available for each measurement. We suggest starting with the smaller of the two sizes.
If you prefer a tighter fit, or if you want to make use easier when not fully hard, select a size on the lower end of the range shown in the chart. For use when not erect, select the seal based on your measurements when soft.
The size of the seal determines how tenaciously the tube hangs on during use. Tighter seals will hold on better, but may limit the length of the stroke. Looser seals will allow for more motion, but may be more likely to slip off.