The PipeSnug FlueSnug is an innovative, patented product designed to provide an airtight and professional seal around 100mm boiler flues where they exit a wall. It replaces the need for mortar or plaster, offering a cleaner and more pleasing finish. This seal can be used both internally and externally, fitting into 152mm core-drilled holes. Made from robust yet flexible recycled polypropylene and TPE, it ensures a snug fit and prevents heat loss, moisture ingress, and pest entry. The design allows for easy fitting from inside the property, eliminating the need for work at height outdoors. It is approved by major boiler manufacturers and manufactured to ISO9001 and ISO14001 standards, ensuring compliance with building regulations.