I would buy the product again but now know its limitations.
The coupling was bought to correct a slight misalignment in an 110mm Osma drain. Unfortunately I did not find the coupling sufficiently flexible. The misalignment was corrected by inserting an Osma 11.25 degree elbow instead, although the coupling was used to provide an essentially straight connection between the "pipe" end of the elbow and the drain.
Shear banded couplings are a requirement of the UK water companies when connecting onto their assets. This requirement forms part of Water Industry Specification (WIS) 4-41-01, which outlines the requirements to connect pipes on adopted systems using only shear banded couplings. The shear band gives the connection added protection against shear loads that could cause the pipes to become mis-aligned.
Shear banded couplings are a requirement of the UK water companies when connecting onto their assets. This requirement forms part of Water Industry Specification (WIS) 4-41-01, which outlines the requirements to connect pipes on adopted systems using only shear banded couplings. The shear band gives the connection added protection against shear loads that could cause the pipes to become mis-aligned.