BluSeal Leakmaster is a compression sealing compound designed for sealing in situ concrete joints across a range of civil and infrastructure applications. Supplied as a single component system, it forms an effective compression seal once installed, without the need for welding or complex installation processes. Manufactured using specialised polyurethane water swelling resins, BluSeal Leakmaster delivers durable, long term sealing performance and is suited to both horizontal and vertical construction joints. Its unique formulation allows installation in joint configurations where conventional solid sealants are difficult to apply, while maintaining strong physical properties and reliable water sealing performance after curing.