Lock seal Melavill SP

Interlock fillings on bituminous base are almost waterproof and environmentally friendly. They are mostly used for temporary solutions on sandy ground conditions. The bitumen sealant has an excellent adhesion and improves not only the tightness but also reduce the friction in the interlocks.

Technical data

Density at 25°C

1,02 - 1,05 g/cm³

Approximate penetration

50 °C 

Approximate softening point after ring and ball

85 °C 

Evaporation loss at 163° C, 5 hours

max. 0,5 % 

Flashing point

min. 250 °C 

Form delivered

in buckets of 20 kg 360kg/palete

Part number


Recommended use

Melavill SP is heated directly with its package to a maximum of 200 °C in the indirectly heated agitator cooker suited to it and poured into the sheet piling interlocks by hand or with a lance (i.e., there is no package waste).

The sheet pile locks must be dry, clean, free of any loose particles, free of grease, oil and dust. To make Melavill SP adhere in the locks, cleaning with compressed air, a wire brush or a high-pressure water jet is recommended. The piles must be laid out in a perfectly horizontal position. In order to prevent the liquid Melavill SP from flowing out of the locks at the ends, they must be sealed with cement or another similar material.

approx. 0.30 kg per running metre in the thread lock
approx. 0.10 kg per running metre in the pressed centre lock
approx. 0.35 kg per m sheet pile wall - with 600 mm sheet pile width
approx. 0.30 kg per m sheet pile wall - with 700 mm sheet pile width
approx. 0.25 kg per m sheet pile wall - with 750 mm sheet pile width

The quantities quoted are based on the Larssen lock in accordance with EN 10248. For other types of locks, consumption may vary accordingly.

The durability of Melavill SP in the filled sheet pile wall is as follows:
in water with a pH of 3.5 to 11.5: very good
in seawater: very good
in mineral oil: low
in petrol and crude oil: very low