TEC 7 Plumb 7 Leak Sealer 750ml

Tec7 Plumb 7 is a professional-grade, high-performance liquid leak sealer engineered to quickly isolate and permanently seal micro-leaks, weeping joints, and pinhole seepage within closed-loop central heating and cooling networks. Developed by the industry-trusted brand Tec7, this advanced chemical treatment circulates safely throughout the system to form a permanent, pressure-resistant seal upon contact with external oxygen. It comes highly recommended for heating engineers, maintenance plumbers, and property owners as a fast, non-invasive remedy to stop pressure drops in boiler systems without the need for expensive structural wall or floor tear-outs.

Why Choose Tec7 Plumb 7 Leak Sealer?

• Precision Micro-Leak Isolation: Specially formulated to detect and seal hairline fractures, weeping solder joints, and pinhole corrosion leaks on contact with atmospheric air. The fluid cures exclusively at the site of the leak, forming a durable, flexible plug that handles standard system operating temperatures and pressures.

• Guaranteed Non-Clogging Safe Formula: Unlike lower-grade granular or fiber-based sealers that can jam moving parts, Plumb 7 is a sophisticated liquid treatment. It is mathematically optimized to remain completely fluid within the circulating water, guaranteeing that it will not clog high-efficiency boiler heat exchangers, circulating pumps, motorized zone valves, or thermostatic radiator valves (TRVs).

• Universal System Material Compatibility: Formulated with non-corrosive, chemically inert compounds that are completely safe for use with all metals and plastics found in modern hydronic heating setups. It will not degrade or react with copper, brass, steel, cast iron, stainless steel, aluminum, PEX, or polybutylene pipework.

• Easy Direct System Application: Designed for effortless integration into active heating loops. The 750ml solution can be easily introduced via a feed and expansion tank, injected directly into a standard radiator using a suitable installer loop, or pumped in through a filling loop system.

• Comprehensive 750ml Treatment Capacity: Packaged in a generous 750ml bottle, providing enough active sealer compound to successfully treat a standard domestic heating system of up to 10 to 12 radiators (approx. a 100-litre system volume), making it perfect for both preventative maintenance and emergency repairs.

Key Features

• Seals micro-leaks in central heating and cooling systems

• Safe for use with all system components and materials

• Easy to apply directly into the system

• Non-clogging and long-lasting solution

• Volume: 750ml

• Ideal for preventative maintenance and quick leak repairs in both domestic and commercial systems

Technical Specifications

• Brand: Tec7

• Product Name: Plumb 7

• Product Type: Central Heating & Cooling System Leak Sealer

• Fluid Volume: 750 ml

• Physical State: Liquid Chemical Treatment

• System Treatment Capacity: Treats standard domestic systems up to 100 litres (10-12 radiators)

• Compatibility: Safe for Steel, Copper, Aluminum, Brass, and PEX Plastic Pipework

• Application Areas: Sealed and Open-Vented Central Heating Systems, Underfloor Heating Loops, and Chilled Water Cooling Circuits

Buy online today for fast nationwide delivery across Ireland, or select Click & Collect to pick up your heating treatments and plumbing supplies directly from our Limerick showroom.