Flex Seal before and after (1.5mm crack)
Even in small rain events, water infiltrates under the lid frame through cracked joints and at risers. Flex Seal Utility Sealant is brush applied to the MH chimney area providing a permanent seal.
1.5mm crack can allow >17kL/d = $3,300pa WW treatment costs*
Flex Seal Utility Sealant
*Data extrapolated from The Gorman-Rupp Company, Engineering Data June 1999 edition & actual quantities reported NSW Water Supply and Sewerage Performance Monitoring report 2014/1