How to measure

Example:

If the distance at the widest points is 8 ½ inches, enter 8.5 into the wide measurement field on the sizing chart.

Measure your well cap at its widest point.

Enter that measurement into the wide measurement field on the sizing chart.

Example:

If the distance at the narrowest point is 6 ½ inches, enter 6.5 into the narrow measurement field on the sizing chart

Measure you well cap at its narrowest point.

Enter that measurement into the narrow measurement field on the sizing chart.

Our calculator will determine the approximate circumference of your well cap and select the appropriate seal for your application.

Measure circumference including bolts.

Example:

If the circumference of your well cap is 19 1/2 inches, order a seal that fits between 18 and 22 inches.

Or:

Measure the circumfrence of your well cap with a flexible tape measure at its widest points (including the bolts).

Enter that measurement into the circumference field on the sizing chart to select the appropriate seal for your well cap.

Or:

If you know the model number of your well cap you can order you seal by the well cap type.

Enter the well cap model number into the sizing chart to select the appropriate seal for your well cap.

Wellseal is designed to shrink to fit, so there is some margin of error built in. When in doubt—order the next size up.

If you are unsure about how to measure you well cap, click here for instructions.