Heldite Jointing Compound 250Ml

-40 to +350 deg Suitable for flanged, screwed, compression joints

Heldite is a high-performance, specialized jointing compound renowned for its ability to create an impenetrable seal in the most demanding environments. This 250ml tin contains a thick, liquid-based sealant that is engineered to prevent leakage of water, gas, steam, and oils. Unlike standard plumbing pastes, Heldite is an adhesive-sealant that provides a semi-permanent, high-integrity bond, making it a favorite for industrial, automotive, and heavy-duty heating applications.

Key Features and Application
Multi-Media Resistance: Exceptionally resistant to a wide range of fluids, including water, steam, oils, petrol, diesel, and many hydraulic fluids. This makes it an essential tool for oil-fired boiler installations and fuel lines.

Adhesive Properties: Acts as a powerful sealant and adhesive, filling microscopic imperfections in the mating surfaces of flanges and threaded joints to ensure a 100% gastight and watertight seal.

Non-Abrasive: Contains no particles that could damage delicate threads or interfere with the operation of pumps and valves.

Temperature Resilience: Capable of maintaining its sealing integrity across a broad temperature range, making it ideal for high-heat heating components and engine manifolds.

Corrosion Prevention: Helps to prevent "seizing" by providing a barrier against moisture and chemical corrosion between metal surfaces.

The Installer's Advantage
Heldite is often referred to as the "ultimate insurance" for difficult joints. While standard compounds are used for general plumbing, professionals reach for Heldite when dealing with oil lines, high-pressure steam, or joints that are subject to significant vibration. Its liquid form allows it to be brushed onto threads or gaskets, ensuring total coverage. It is particularly effective for sealing the threaded components of oil-fired heating systems, where even the smallest weep of fuel can cause significant odors and damage.

Essential Companion Products (System Integration)
To achieve a professional, long-lasting installation, the following products are recommended:

Joint Preparation: For general water-based heating joints, consider the non-setting: Hawk Jointing Compound (400g).

System Protection: Ensure your heating system is internally protected with: Hinton H14 System Inhibitor.

Specialist Support and Local Collection
Need technical advice on the best sealant for an oil line or high-pressure application? Our trade counter is fully stocked with specialist chemicals and jointing solutions.

Visit our trade counter and Bathroom Showroom at 61 Fullers Road, E18 2QB for expert advice and quick access to parts.