6 5/8″ Drill Pipe Wiper Ball 6″or 7″ OD Foam Wiper Balls.
* Merit’s wiper balls are made of natural rubber and can be used in a temperature range of 40°F (4°C) to 302°F (150°C).
** The drill pipe foam wiper ball has a parting stretch of 380 to 440%, which means it can pass through small restrictions without being damaged.
*** The wiper ball can be loaded into drill-pipe or tubing connections. It easily passes through internal upset restrictions such as mechanical setting tools, diverters, and liner running tools, and multiple balls can be pumped if necessary.
**** Foam wiper balls have been used with all types of drilling and displacement fluids.