System MSD

Wedge seal for concrete manholes | Ø 800-1500 mm

The M.O.L. concrete pipe seal system MSD is designed for concrete shafts and guarantees a reliable connection in compliance with DIN EN 1917 and DIN V 4034-1. The MSD seal also fulfils the requirements of DIN EN 681-1.


Seal is made of SBR (styrene-butadiene rubber) which is ideal for use in sewage systems and complies with the requirements of the DIN EN 681-1 WC 40 (hardness 40 ± 5 IRHD). The MSD seal is tested and inspected for quality by MPA NRW (Dortmund).

Pipe manufacture

The MSD seal is fixed on the spigot of the shaft ring. The shape of the seal allows a slight centring of the shaft ring.


Position the MSD seal on the overhang on the spigot. The tension of the seal should be balanced by lifting it several times to ensure that the seal is fastened to the overhang around the entire circumference.

Note for pipe installation

Lubricate the entire pipe collar surface with a lubricant (e.g. M.O.L.). Centre the shaft ring at a junction and join the parts.

Load transfer

When installing shaft structures, suitable load compensation (e.g. with a fresh layer of concrete) should be used.