A McAlpine DC4‑BL Blanking Cap 4″/110 mm is a drain fitting used to seal the end of a 110 mm (4″) drainage or soil pipe. It’s made of durable black polypropylene and fits into the pipe to provide a secure, watertight closure, preventing water, debris, or gases from entering or exiting unused pipe ends. This makes it useful for capping off redundant pipework in plumbing and drainage systems.
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