» Buchen Inc
   Manufacturer of inflatable pipe plugs, bypass plugs and accessories used for testing, plugging and bypassing in sewer lines.
   http://www.buchen.com/

» Cherne Industries
   Manufactures and sells pipe plugging and testing equipment, pipe lubricant, primers, and cements .
   http://www.cherneind.com/

» Mechanical Research
   Source for inflatable and mechanical pipe test plugs, inflatable and annular seals as well as bulkheads.
   http://www.mechanicalresearch.com/

» Petersen, Inc.
   Distributor of specialty pipe plugs for pipeline and plumbing contractors.
   http://www.pipeplug.com/

» Sarco Stopper Limited
   Manufacture under pressure pipe stoppers and bagging-off systems for gas, water and other service pipes. Allows repair of pipes without loss in supply. Available world wide.
   http://www.sarco-stopper.com/

» Stemar Equipment & Supply Co., Inc.
   For pipeline and utility contractors. Pipe plugs, sewer pipe plugs, pipeline acceptance and testing equipment, pipe leak locating equipment. Also, contractor hardware and supplies.
   http://www.stemarinc.com/

» Vanderlans & Sons, Inc.
   Offers a complete line of test plugs and flow-thru plugs in single and multi sizes. Also available are joint testers, high pressure plugs and air and vacuum testing equipment.
   http://www.lansas.com/