Flexseal Adaptor Couplings, also known as reducer couplings, are designed to connect drainage pipes with different outside diameters. They allow for the connection of larger drainage pipes to smaller ones and vice versa. These couplings conform to EN295-4 and are made from EPDM rubber compliant with BS EN684, featuring Grade 307 stainless steel clamps. They offer a quick, efficient, reliable, and tested method for connecting pipes of various materials and outside diameters, suitable for a wide range of pipe configurations. They create a permanent airtight and watertight seal and are easy to fit. Applications include housing sites, private roads, industrial sites, and agricultural land. The size range available is A: 110-125mm and B: 100-115mm.