"This has always been a great product, good tight fit but easy to install. It must be installed in the pipe and not a plain boss, without the pipe it will fit very loosly and won't seal at all. The best way to cut the rubber flange is with a sharp pair of scissors in the top flat and then cut round carefully to open up to the required size, cut out as little as possible to ensure a good tight fit."
"This is a highly flexable rubber insert so does not fit over the 100mm pipe but fits inside. It makes a good seal and the universal waste cut out is great but it takes some cutting as the rubber is of great quality!"
"I use these Universal Waste Adaptors when I remove a toilet, to temporarily seal off the socket that the pan connector goes into. With the w/c u-bend removed, these stop the smells coming into the room whilst working there - much improved aroma!"