LANSAS Products, manufactured by Vanderlans & Sons, Inc. of Lodi, CA, offers a complete line of Inflatable and Mechanical Pipe Plugs used for testing pipe, blocking and bypassing flow in pipelines of various kinds. Our single sized and multi-sized sewer plugs are made from nylon cord re-enforced natural rubber. We also manufacture a complete line of Joint Testers, High Pressure Plugs, Air Testing Equipment (SMART-BOX Complete Air Test Kit) and Manhole Vacuum Testing Equipment (SMART-BOX Complete Vaccuum Test Kit).