PTFE thread tape is recommended for threaded joints
They also may be used to prevent damage to the sprinkler head
Used for sprinkler systems where an extension is needed for the sprinkler head to be above ground level
WARNING: This product can expose you to chemicals including Titanium dioxide, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65Warnings.ca.gov/