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A-LOK set forth with a single commitment: to manufacture and develop ecological-responsive wastewater products that are the solutions to customer and industry. In the early 1970's, the primary concern of the wastewater construction industry was watertightness. At that time, as it is now, precast concrete was recognized as the construction material best able to provide strength and durability in underground structures. The key however, to protecting public health and safety as well as the local environment was a watertight connection between pipeline and structure. In order to address this need, the original A●LOK connector design was conceived. From this original connector evolved A●LOK Products, Incorporated, a company created in order to meet the widespread demand for such patented innovations in watertight technology. Recognizing that supplying customers with a quality product as a means to success, A●LOK set forth with a single commitment; To manufacture and develop ecological-responsive wastewater products that are the solutions to customer and industry. In the last 35 years, ever-changing demands in the sanitary sewer industry have led A●LOK to develop and offer a wide range of new products. These include, flexible pipe-to-manhole connectors for all applications, plastic inserts and seals for manhole entries and joints, forming for manhole inverts, corrosion resistant linings, and lubricants and sealants. The beginning of a new century has provided A●LOK an opportunity to create watertight storm water systems that will contribute to preserving the environment and improving our countries infrastructure for future generations. With the support of talented human resources and a commitment to innovative design, superior craftsmanship and outstanding customer service, today A●LOK is synonymous with watertight quality in underground structures throughout the industry.