At Drainage365 we offer a wide range of flexible, rubber repair couplings to help and assist with any underground drainage installation is available. The couplings will fit most sizes of pipe, 110mm & 160mm. We can also supply these up to 3000mm in diameter. The couplings will also repair and adapt pipes of varying diameters i.e. a 160mm pipe reducing down to a 110mm pipe. There is a standard range of flexseal repair couplings available on our site but if you require any additional or bespoke size combination please contact us and we can arrange to suit your own underground drainage system requirements