External Repair Sealing Band
MacWrap™, which meets ASTM C 877-16 as well as ASTM C 1244, is engineered to be a permanent external repair sealing band for concrete pipe of all shapes and sizes. MacWrap is typically specified for gravity flow applications, such as stormwater and sanitary sewer, when it is imperative that superfluous water not enter at the joint. In addition, MacWrap is designed to maintain the joint integrity even when given less than perfect bedding conditions. This product has a proven track record spanning over 40 years, as an assurance against joint failure and the need for joint rehabilitation.
MacWrap’s structure includes an adhesive mastic membrane, which is formulated to aggressively bond to the pipe wall and continue to cold flow into the pores of the concrete to form a positive and permanent seal around the pipe joint. MacWrap is a strong, puncture resistant product, which incorporates an embedded high strength polypropylene reinforcing fabric. The outside backing is a cross-laminated polyethylene that is permanent, impervious to water and resistant to most chemicals. High strength steel compression bands are incorporated within the above structure for tensioning around the full circumference of the pipe, thereby providing added assurance for a positive seal against infiltration.
MacWrap is available in wider widths and additional compression bands, if needed, due to the large bell offset or to improve RCP joint performance and for repairs.
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Also ask about our MacWrap for RCP, Manholes and Box Culverts.