Cherne Industries - Manufactures and sells pipe plugging and testing equipment, pipe lubricant, primers, and cements . 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. 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. Mechanical Research - Source for inflatable and mechanical pipe test plugs, inflatable and annular seals as well as bulkheads. 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. Pajono Woodworks - Manufactures Redwood Pipe Plugs, Softwood Damage Control Plugs, Haz-Mat Plug Kits, and wooden wedges. Petersen, Inc. - Distributor of specialty pipe plugs for pipeline and plumbing contractors.