The Hylomar red 40ml synthetic semi-hardening jointing compound has excellent gap-filling properties. It is resistant to the wide range of fluids, specially water (including salt-water and steam) and synthetic oils. These properties mean this compound is highly effective at sealing pitted or roughly machined surfaces, particularly those in contact with water and anti-freeze.

Effective for the sealing of holey
Can also be heat aged to greatly improve its bonding and gap-filling characteristics
Viscosity ranges between 55,000cps and 75,000 cps
Shelf life of 12 months

Sealing cooling systems such as water pumps, radiators and thermostat housings
Sealing sump and gearbox housings
Sealing against steam
Preventing galvanic corrosion between dissimilar metals
Environmental seals, particularly those that may be exposed to salt water