The Mc Alpine Waste Pipe Blank Cap 1 1/4in S23U is a hard-wearing and suitable cap for a wide range of waste applications. It features a compression connection and Multifit fittings that suit all plastic waste pipes to BS EN 1451-1:2017 and BS EN 1329-1:2020, copper pipe, and lead pipe. Manufactured in polypropylene, this cap is designed for a 1.25-inch compression end for all waste pipes, working with push-fit or solvent waste systems.